OKTA, INC., 10-K filed on 3/4/2021
Annual Report
v3.20.4
Cover - USD ($)
$ in Billions
 12 Months Ended
Jan. 31, 2021
Feb. 28, 2021
Jul. 31, 2020
Entity Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Jan. 31, 2021    
Current Fiscal Year End Date --01-31    
Document Transition Report false    
Entity File Number 001-38044    
Entity Registrant Name Okta, Inc.    
Entity Incorporation, State or Country Code DE    
Entity Address, Address Line One 100 First Street, Suite 600    
Entity Tax Identification Number 26-4175727    
Entity Address, City or Town San Francisco    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 94105    
City Area Code 888    
Local Phone Number 722-7871    
Title of 12(b) Security Class A common stock, par value $0.0001 per share    
Trading Symbol OKTA    
Security Exchange Name NASDAQ    
Entity Well-Known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Smaller Reporting Company false    
Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Shell Company false    
Entity Public Float     $ 26.2
Amendment Flag false    
Entity Central Index Key 0001660134    
Document Fiscal Year Focus 2021    
Document Fiscal Period Focus FY    
Documents Incorporated by Reference Portions of the registrant's definitive Proxy Statement relating to the 2021 Annual Meeting of Stockholders are incorporated herein by reference in Part III of this Annual Report on Form 10-K to the extent stated herein. Such Proxy Statement will be filed with the Securities and Exchange Commission within 120 days of the registrant's fiscal year ended January 31, 2021.    
Class A Common Stock      
Entity Information [Line Items]      
Entity Common Stock, Shares Outstanding   123,053,024  
Class B Common Stock       
Entity Information [Line Items]      
Entity Common Stock, Shares Outstanding   8,159,447  
v3.20.4
CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Jan. 31, 2021
Jan. 31, 2020
Current assets:    
Cash and cash equivalents $ 434,607 $ 520,048
Short-term investments 2,121,584 882,976
Accounts receivable, net of allowances of $3,451 and $1,166 194,818 130,115
Deferred commissions 45,949 33,636
Prepaid expenses and other current assets 81,609 32,950
Total current assets 2,878,567 1,599,725
Property and equipment, net 62,783 53,535
Operating lease right-of-use assets 149,604 125,204
Deferred commissions, noncurrent 108,555 77,874
Intangible assets, net 27,009 32,529
Goodwill 48,023 48,023
Other assets 24,256 18,505
Total assets 3,298,797 1,955,395
Current liabilities:    
Accounts payable 8,557 3,837
Accrued expenses and other current liabilities 53,729 36,887
Accrued compensation 71,906 40,300
Convertible senior notes, net 908,684 100,703
Deferred revenue 502,738 365,236
Total current liabilities 1,545,614 546,963
Convertible senior notes, net, noncurrent 857,387 837,002
Operating lease liabilities, noncurrent 179,518 154,511
Deferred revenue, noncurrent 10,860 6,214
Other liabilities, noncurrent 11,375 5,361
Total liabilities 2,604,754 1,550,051
Commitments and contingencies (Note 11)
Stockholders’ equity:    
Preferred stock 0 0
Additional paid-in capital 1,656,096 1,105,564
Accumulated other comprehensive income 5,390 892
Accumulated deficit (967,456) (701,124)
Total stockholders’ equity 694,043 405,344
Total liabilities and stockholders’ equity 3,298,797 1,955,395
Class A Common Stock     
Stockholders’ equity:    
Common stock 12 11
Class B Common Stock     
Stockholders’ equity:    
Common stock $ 1 $ 1
v3.20.4
CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Jan. 31, 2021
Jan. 31, 2020
Allowance for accounts receivable $ 3,451 $ 1,166
Preferred stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Preferred stock, authorized (in shares) 100,000,000 100,000,000
Preferred stock, issued (in shares) 0 0
Preferred stock, outstanding (in shares) 0 0
Class A Common Stock     
Common stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Common stock, authorized (in shares) 1,000,000,000 1,000,000,000
Common stock, issued (in shares) 122,824,000 113,990,000
Common stock, outstanding (in shares) 122,824,000 113,990,000
Class B Common Stock     
Common stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Common stock, authorized (in shares) 120,000,000 120,000,000
Common stock, issued (in shares) 8,159,000 8,648,000
Common stock, outstanding (in shares) 8,159,000 8,648,000
v3.20.4
CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)
shares in Thousands, $ in Thousands
 12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2019
Revenue      
Total revenue $ 835,424 $ 586,067 $ 399,254
Cost of revenue      
Total cost of revenue 217,681 159,382 113,421
Gross profit 617,743 426,685 285,833
Operating expenses      
Research and development 222,826 159,269 102,385
Sales and marketing 427,350 340,356 227,960
General and administrative 171,726 112,892 75,110
Total operating expenses 821,902 612,517 405,455
Operating loss (204,159) (185,832) (119,622)
Interest expense (72,660) (27,017) (15,072)
Interest income and other, net 12,891 17,089 9,180
Loss on early extinguishment and conversion of debt (2,263) (14,572) 0
Interest and other, net (62,032) (24,500) (5,892)
Loss before provision for (benefit from) income taxes (266,191) (210,332) (125,514)
Provision for (benefit from) income taxes 141 (1,419) (17)
Net loss $ (266,332) $ (208,913) $ (125,497)
Net loss per share, basic and diluted (in dollars per share) $ (2.09) $ (1.78) $ (1.17)
Weighted-average shares used to compute net loss per share, basic and diluted (in shares) 127,212 117,221 107,504
Subscription      
Revenue      
Total revenue $ 796,613 $ 552,688 $ 370,855
Cost of revenue      
Total cost of revenue 170,095 116,445 77,354
Professional services and other      
Revenue      
Total revenue 38,811 33,379 28,399
Cost of revenue      
Total cost of revenue $ 47,586 $ 42,937 $ 36,067
v3.20.4
CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2019
Statement of Comprehensive Income [Abstract]      
Net loss $ (266,332) $ (208,913) $ (125,497)
Net change in unrealized gains or losses on available-for-sale securities 779 1,220 179
Foreign currency translation adjustments 3,719 (9) (889)
Other comprehensive income (loss) 4,498 1,211 (710)
Comprehensive loss $ (261,834) $ (207,702) $ (126,207)
v3.20.4
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) - USD ($)
$ in Thousands
Total
Common Stock
Class A Common Stock 
Common Stock
Class B Common Stock 
Additional Paid-in Capital
Accumulated Other Comprehensive Income (Loss)
Accumulated Deficit
Beginning balance (in shares) at Jan. 31, 2018   70,609,898 33,361,106      
Beginning balance at Jan. 31, 2018 $ 199,340 $ 7 $ 3 $ 565,653 $ 391 $ (366,714)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Issuance of common stock upon exercise of stock options and other activity, net (in shares)   6,465,957 104,084      
Issuance of common stock upon exercise of stock options and other activity, net 37,611 $ 1   37,610    
Issuance of common stock under employee stock purchase plan, net of cancellations (in shares)   615,210        
Issuance of common stock under employee stock purchase plan, net of cancellations 13,727     13,727    
Issuance of common stock for settlement of RSUs (in shares)   976,248        
Issuance of common stock pursuant to charitable donation (in shares)   20,000        
Issuance of common stock pursuant to charitable donation 1,008     1,008    
Conversion of Class B common stock to Class A common stock (in shares)   22,406,009 (22,406,009)      
Conversion of Class B common stock to Class A common stock 0 $ 2 $ (2)      
Equity component of convertible senior notes, net of issuance costs 77,631     77,631    
Purchases of hedges related to convertible senior notes (80,040)     (80,040)    
Issuance of warrants related to convertible senior notes 52,440     52,440    
Stock-based compensation 76,867     76,867    
Other comprehensive income (710)       (710)  
Net loss (125,497) $ (107,926) $ (17,571)     (125,497)
Ending balance (in shares) at Jan. 31, 2019   101,093,322 11,059,181      
Ending balance at Jan. 31, 2019 252,377 $ 10 $ 1 744,896 (319) (492,211)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Issuance of common stock upon exercise of stock options and other activity, net (in shares)   5,323,410 100,007      
Issuance of common stock upon exercise of stock options and other activity, net 45,732 $ 1   45,731    
Issuance of common stock under employee stock purchase plan, net of cancellations (in shares)   322,795        
Issuance of common stock under employee stock purchase plan, net of cancellations 18,767     18,767    
Issuance of common stock for settlement of RSUs (in shares)   1,716,222        
Issuance of common stock for bonus settlement (in shares)   34,600        
Issuance of common stock for bonus settlement 2,809     2,809    
Issuance of common stock pursuant to charitable donation (in shares)   15,000        
Issuance of common stock pursuant to charitable donation 1,746     1,746    
Conversion of Class B common stock to Class A common stock (in shares)   2,511,409 (2,511,409)      
Conversion of Class B common stock to Class A common stock 0          
Equity component of convertible senior notes, net of issuance costs 217,347     217,347    
Equity component of early extinguishment of convertible senior notes (in shares)   2,973,311        
Equity component of early extinguishment and conversion of convertible senior notes (26,713)     (26,713)    
Proceeds from hedges related to convertible senior notes 405,851     405,851    
Payments for warrants related to convertible senior notes (358,622)     (358,622)    
Purchases of capped calls related to convertible senior notes (74,094)     (74,094)    
Stock-based compensation 127,846     127,846    
Other comprehensive income 1,211       1,211  
Net loss (208,913) $ (192,138) $ (16,775)     (208,913)
Ending balance (in shares) at Jan. 31, 2020   113,990,069 8,647,779      
Ending balance at Jan. 31, 2020 $ 405,344 $ 11 $ 1 1,105,564 892 (701,124)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Issuance of common stock upon exercise of stock options and other activity, net (in shares) 4,368,683 4,113,825 254,858      
Issuance of common stock upon exercise of stock options and other activity, net $ 45,620 $ 1   45,619    
Issuance of common stock under employee stock purchase plan, net of cancellations (in shares)   247,131        
Issuance of common stock under employee stock purchase plan, net of cancellations 25,911     25,911    
Issuance of common stock for settlement of RSUs (in shares)   2,109,393        
Issuance of common stock for bonus settlement (in shares)   85,701        
Issuance of common stock for bonus settlement 9,818     9,818    
Issuance of common stock pursuant to charitable donation (in shares)   42,500        
Issuance of common stock pursuant to charitable donation 9,292     9,292    
Conversion of Class B common stock to Class A common stock (in shares)   743,190 (743,190)      
Conversion of Class B common stock to Class A common stock 0          
Exercise of hedges related to convertible senior notes (in shares)   (167,946)        
Equity component of convertible senior notes, net of issuance costs 306,220     306,220    
Equity component of early extinguishment of convertible senior notes (in shares)   1,660,104        
Equity component of early extinguishment and conversion of convertible senior notes 70,493     70,493    
Proceeds from hedges related to convertible senior notes 195,046     195,046    
Payments for warrants related to convertible senior notes (175,399)     (175,399)    
Purchases of capped calls related to convertible senior notes (133,975)     (133,975)    
Stock-based compensation 197,507     197,507    
Other comprehensive income 4,498       4,498  
Net loss (266,332) $ (248,892) $ (17,440)     (266,332)
Ending balance (in shares) at Jan. 31, 2021   122,823,967 8,159,447      
Ending balance at Jan. 31, 2021 $ 694,043 $ 12 $ 1 $ 1,656,096 $ 5,390 $ (967,456)
v3.20.4
CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2019
Cash flows from operating activities:      
Net loss $ (266,332) $ (208,913) $ (125,497)
Adjustments to reconcile net loss to net cash provided by operating activities:      
Stock-based compensation 196,181 126,624 76,320
Depreciation, amortization and accretion 36,865 17,815 8,001
Amortization of debt discount and issuance costs 68,424 25,892 14,279
Amortization of deferred commissions 39,661 28,588 20,852
Deferred income taxes (1,182) (2,253) (765)
Non-cash charitable contributions 9,292 1,746 1,008
Loss on early extinguishment and conversion of debt 2,263 14,572 0
Other, net 5,537 (11) 640
Changes in operating assets and liabilities:      
Accounts receivable (66,373) (37,515) (39,682)
Deferred commissions (81,016) (61,224) (41,342)
Prepaid expenses and other assets (13,174) (4,080) (10,334)
Operating lease right-of-use assets 19,053 12,951 17,239
Accounts payable 4,081 1,689 (1,437)
Accrued compensation 44,157 23,034 7,429
Accrued expenses and other liabilities 5,527 9,972 5,800
Operating lease liabilities (17,150) (9,716) (6,642)
Deferred revenue 142,148 116,432 89,303
Net cash provided by operating activities 127,962 55,603 15,172
Cash flows from investing activities:      
Capitalization of internal-use software costs (4,159) (3,888) (2,851)
Purchases of property and equipment (13,083) (15,442) (19,811)
Proceeds from sales of property and equipment 0 0 740
Purchases of securities available for sale and other (2,029,030) (999,387) (631,488)
Proceeds from maturities and redemption of securities available for sale 535,123 356,277 298,650
Proceeds from sales of securities available for sale and other 206,129 27,271 173,072
Purchase of intangible assets (126) (8,589) 0
Payments for business acquisition, net of cash acquired 0 (44,283) (15,632)
Net cash used in investing activities (1,305,146) (688,041) (197,320)
Cash flows from financing activities:      
Proceeds from issuance of convertible senior notes, net of issuance costs 1,134,841 1,040,660 334,980
Payments for repurchases of convertible senior notes (446) (224,414) 0
Purchases of hedges related to convertible senior notes 0 0 (80,040)
Proceeds from hedges related to convertible senior notes 195,046 405,851 0
Proceeds from issuance of warrants related to convertible senior notes 0 0 52,440
Payments for warrants related to convertible senior notes (175,399) (358,622) 0
Purchases of capped calls related to convertible senior notes (133,975) (74,094) 0
Proceeds from stock option exercises, net of repurchases 45,620 45,363 36,861
Proceeds from shares issued in connection with employee stock purchase plan 25,911 18,767 13,727
Other, net 0 (126) (206)
Net cash provided by financing activities 1,091,598 853,385 357,762
Effects of changes in foreign currency exchange rates on cash, cash equivalents and restricted cash 2,263 (209) (632)
Net (decrease) increase in cash, cash equivalents and restricted cash (83,323) 220,738 174,982
Cash, cash equivalents and restricted cash at beginning of year 531,953 311,215 136,233
Cash, cash equivalents and restricted cash at end of year 448,630 531,953 311,215
Cash paid during the period for:      
Interest 3,759 862 403
Income taxes 978 1,123 514
Non-cash investing and financing activities:      
Issuance of common stock for repurchases and conversions of convertible senior notes 307,910 380,406 0
Benefit from exercise of hedges related to convertible senior notes 37,076 0 0
Common stock issued as charitable contribution 9,292 1,746 1,008
Operating lease right-of-use assets exchanged for lease liabilities 45,611 16,832 127,575
Property and equipment acquired through tenant improvement allowance 4,811 304 22,236
Property and equipment and other accrued but not yet paid 974 855 7,225
Issuance of common stock for bonus settlement 9,818 2,809 0
Reconciliation of cash, cash equivalents, and restricted cash within the consolidated balance sheets to the amounts shown in the statements of cash flows above:      
Total cash, cash equivalents and restricted cash $ 531,953 $ 311,215 $ 311,215
v3.20.4
Overview and Basis of Presentation
 12 Months Ended
Jan. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Overview and Basis of Presentation Overview and Basis of Presentation
Description of Business
Okta, Inc. (the Company) is the leading independent identity management platform for the enterprise. The Okta Identity Cloud enables the Company's customers to securely connect the right people to the right technologies and services at the right time. The Company was incorporated in January 2009 as Saasure, Inc., a California corporation, and was later reincorporated in April 2010 under the name Okta, Inc. as a Delaware corporation. The Company is headquartered in San Francisco, California.
Basis of Presentation and Principles of Consolidation
The accompanying consolidated financial statements, which include the accounts of the Company and its wholly owned subsidiaries, have been prepared in conformity with accounting principles generally accepted in the United States of America (GAAP). All intercompany balances and transactions have been eliminated in consolidation.
The Company’s fiscal year ends on January 31. References to fiscal 2021, for example, refer to the fiscal year ended January 31, 2021.
Use of Estimates
The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates, judgments and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. The Company bases its estimates on historical experience and on other assumptions that its management believes are reasonable under the circumstances. Actual results could vary from those estimates. The Company’s most significant estimates include the SSP for each distinct performance obligation included in customer contracts with multiple performance obligations, the determination of the period of benefit for deferred commissions, the determination of the effective interest rate of the liability components of its convertible senior notes, the determination of the incremental borrowing rate used for operating lease liabilities, the valuation of deferred income tax assets and the valuation of acquired intangible assets.
In March 2020, the World Health Organization (WHO) declared the outbreak of the novel coronavirus, COVID-19, a pandemic, which continues to spread across the globe. The Company considered the impact of COVID-19 on the assumptions and estimates used and determined that there were no material adverse impacts on the consolidated financial statements for the year ended January 31, 2021. As events continue to evolve and additional information becomes available, our assumptions and estimates may change materially in future periods.
Foreign Currency
The functional currencies of the Company’s foreign subsidiaries are the respective local currencies. Translation adjustments arising from the use of differing exchange rates from period to period are included in accumulated other comprehensive loss within the consolidated statements of redeemable convertible preferred stock and stockholders’ equity (deficit). Foreign currency transaction gains and losses are included in other expense, net in the consolidated statements of operations and were not material for the years ended January 31, 2021, 2020 or 2019. All assets and liabilities denominated in a foreign currency are translated into U.S. dollars at the exchange rate on the balance sheet date. Revenue and expenses are translated at the average exchange rate during the period, and equity balances are translated using historical exchange rates.
v3.20.4
Summary of Significant Accounting Policies
 12 Months Ended
Jan. 31, 2021
Accounting Policies [Abstract]  
Summary of Significant Accounting Policies Summary of Significant Accounting Policies
Segment Information
The Company operates in a single operating segment. The Company’s chief operating decision maker is its chief executive officer, who reviews financial information presented on a consolidated basis for purposes of making operating decisions, assessing financial performance and allocating resources.
Revenue Recognition
The Company derives revenue from subscription fees (which include support fees) and professional services fees. The Company sells subscriptions to its platform through arrangements that are generally one to five years in length. The Company’s arrangements are generally non-cancellable and non-refundable. Furthermore, if a customer reduces the contracted usage or service level, the customer has no right of refund. The Company’s subscription arrangements do not provide customers with the right to take possession of the software supporting the platform and, as a result, are accounted for as service arrangements. This revenue recognition policy is consistent for sales generated directly with customers and sales generated indirectly through channel partners.
The Company determines revenue recognition through the following steps:
•Identification of the contract, or contracts, with a customer;
•Identification of the performance obligations in the contract;
•Determination of the transaction price;
•Allocation of the transaction price to the performance obligations in the contract; and
•Recognition of revenue when, or as, the Company satisfies a performance obligation.
Subscription Revenue
Subscription revenue, which includes support, is recognized on a straight-line basis over the non-cancellable contractual term of the arrangement, generally beginning on the date that the Company’s service is made available to the customer.
Professional Services Revenue
The Company’s professional services principally consist of customer-specific requests for application integrations, user interface enhancements and other customer-specific requests. Revenue for the Company’s professional services is recognized as services are performed in proportion to their pattern of transfer.
Contracts with Multiple Performance Obligations
Some of the Company’s contracts with customers contain multiple performance obligations. For these contracts, the Company accounts for individual performance obligations separately if they are distinct. The transaction price is allocated to the separate performance obligations on a relative SSP basis. The Company determines SSP based on observable, if available, prices for those related services when sold separately. When such observable prices are not available, the Company determines SSP based on overarching pricing objectives and strategies, taking into consideration market conditions and other factors, including customer size, volume purchased, market and industry conditions, product-specific factors and historical sales of the deliverables.
Deferred Revenue
Deferred revenue consists primarily of payments received and accounts receivable recorded in advance of revenue recognition under the Company’s subscription and support services and professional services arrangements. The Company primarily invoices its customers for its subscription services arrangements annually in advance. The Company’s payment terms generally provide that customers pay the invoiced portion of the total arrangement fee within 30 days of the invoice date. Amounts anticipated to be recognized within one year of the balance sheet date are recorded as deferred revenue, current; the remaining portion is recorded as deferred revenue, noncurrent in the consolidated balance sheets.
Deferred Commissions
Sales commissions earned by the Company’s sales force are considered incremental and recoverable costs of obtaining a contract with a customer. Sales commissions for new revenue contracts, including incremental sales to existing customers, are deferred and then amortized on a straight-line basis over a period of benefit, which the Company has determined to be generally five years. The Company determined the period of benefit by taking into consideration the terms of its customer contracts, its technology and other factors. Sales commissions for renewal contracts (which are not considered commensurate with sales commissions for new revenue contracts and incremental sales to existing customers) are deferred and then amortized on a straight-line basis over the related
period of benefit, which is generally the related contract renewal term. Amortization expense is included in sales and marketing expenses in the accompanying consolidated statements of operations.
Sales commissions capitalized as contract costs totaled $81.0 million and $61.3 million in the years ended January 31, 2021 and 2020, respectively. Amortization of contract costs was $39.7 million, $28.6 million and $20.9 million for the years ended January 31, 2021, 2020 and 2019, respectively. There was no impairment loss in relation to the costs capitalized.
Cost of Revenue
Costs of revenue primarily consist of costs related to providing the Company’s cloud-based platform to its customers, including third-party hosting fees, amortization of capitalized internal-use software and finite-lived purchased developed technology, customer support, other employee-related expenses for security, technical operations and professional services staff, and allocated overhead costs.
Cash, Cash Equivalents and Restricted Cash
Cash and cash equivalents consist of cash on hand and highly liquid investments with original maturities of three months or less from the date of purchase. Cash equivalents generally consist of investments in money market funds. The fair market value of cash equivalents approximated their carrying value as of January 31, 2021 and 2020.
As of January 31, 2021 and 2020, the Company's long-term restricted cash balance was $9.5 million and $11.4 million, respectively, primarily related to letters of credit for its facility lease agreements. 
Short-Term Investments
The Company’s short-term investments comprise U.S. treasury securities and corporate debt securities. The Company determines the appropriate classification of its short-term investments at the time of purchase and reevaluates such designation at each balance sheet date. The Company has classified and accounted for its short-term investments as available-for-sale securities as the Company may sell these securities at any time for use in its current operations or for other purposes, even prior to maturity. As a result, short-term investments, including securities with stated maturities beyond twelve months, are classified within current assets in the consolidated balance sheets.
Available-for-sale securities are recorded at fair value each reporting period and are periodically evaluated for unrealized losses. For unrealized losses in securities that the Company intends to hold and will not more likely than not be required to sell before recovery, the Company further evaluates whether declines in fair value below amortized cost are due to credit or non-credit related factors.
The Company considers credit related impairments to be changes in value that are driven by a change in the creditor’s ability to meet its payment obligations, and records an allowance and recognizes a corresponding loss in interest income and other, net when the impairment is incurred. Unrealized non-credit related losses and unrealized gains are reported as a separate component of accumulated other comprehensive loss in the consolidated balance sheets until realized. Realized gains and losses are determined based on the specific identification method and are reported in interest income and other, net in the consolidated statements of operations.
Accounts Receivable and Allowances
Accounts receivable are recorded at the invoiced amount, net of allowances. These allowances are based on the Company’s assessment of the collectibility of accounts by considering the age of each outstanding invoice, the collection history of each customer, and an evaluation of current expected risk of credit loss based on current economic conditions and reasonable and supportable forecasts of future economic conditions over the life of the receivable. We assess collectibility by reviewing accounts receivable on an aggregated basis where similar characteristics exist and on an individual basis when we identify specific customers with collectibility issues. Amounts deemed uncollectible are recorded as an allowance in the consolidated balance sheets with an offsetting decrease in deferred revenue or a charge to general and administrative expense in the consolidated statements of operations.
As of January 31, 2021, allowances include collectibility concerns stemming from business and market disruption caused by COVID-19 and may fluctuate materially in future periods as the duration and severity of the impact of the COVID-19 pandemic remains uncertain.
Property and Equipment
Property and equipment, net, is stated at cost less accumulated depreciation. Depreciation is recorded using the straight-line method over the estimated useful lives of the respective assets. Repairs and maintenance costs are expensed as incurred.
  The useful lives of property and equipment are as follows:
Useful lives
Capitalized internal-use software costs3 years
Computers and equipment3 years
Furniture and fixtures7 years
Leasehold improvementsShorter of estimated useful life or remaining lease term
Business Combinations
When the Company acquires a business, the purchase price is allocated to the net tangible and identifiable intangible assets acquired based on their estimated fair values. Any residual purchase price is recorded as goodwill. The allocation of the purchase price requires management to make significant estimates in determining the fair values of assets acquired and liabilities assumed, especially with respect to intangible assets. These estimates can include, but are not limited to, the cash flows that an asset is expected to generate in the future, the appropriate weighted-average cost of capital and the cost savings expected to be derived from acquiring an asset. These estimates are inherently uncertain and unpredictable. During the measurement period, which may be up to one year from the acquisition date, adjustments to the fair value of these tangible and intangible assets acquired and liabilities assumed may be recorded, with the corresponding offset to goodwill. Upon the conclusion of the measurement period or final determination of the fair value of assets acquired or liabilities assumed, whichever comes first, any subsequent adjustments are recorded to the consolidated statements of operations.
Goodwill and Other Long-Lived Assets
The excess of the purchase price over the estimated fair value of net assets of businesses acquired in a business combination is recognized as goodwill. Goodwill is tested for impairment annually on November 1st or more frequently if certain indicators are present.
Long-lived assets, such as property and equipment and finite-lived intangible assets subject to amortization are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of any asset may not be recoverable. Recoverability of assets to be held and used is measured by comparing the carrying amount to the estimated undiscounted future cash flows expected to be generated. If the carrying amount exceeds the undiscounted cash flows, the assets are determined to be impaired and an impairment charge is recognized as the amount by which the carrying amount exceeds its fair value.
The Company amortizes intangible assets with finite lives on a straight-line basis over their estimated useful lives in cost of revenue in the consolidated statements of operations.
Operating Leases and Incremental Borrowing Rate
The Company leases office space under operating leases with expiration dates through 2028. The Company determines whether an arrangement constitutes a lease and records lease liabilities and right-of-use assets on its consolidated balance sheets at lease commencement. Lease liabilities are measured based on the present value of the total lease payments not yet paid discounted based on the more readily determinable of either the rate implicit in the lease or the Company’s incremental borrowing rate, which is the estimated rate the Company would be required to pay for a collateralized borrowing equal to the total lease payments over the term of the lease. Lease liabilities due within twelve months are included within accrued expenses and other current liabilities on the Company's consolidated balance sheet. The estimation of the incremental borrowing rate is based on an estimate of the Company's unsecured borrowing rate for its Notes, adjusted for tenor and collateralized security features. Right-of-use assets are measured based on the corresponding lease liability adjusted for (i) payments made to the lessor at or before the commencement date, (ii) initial direct costs incurred and (iii) tenant incentives received, incurred or payable under the lease. Recognition of rent expense begins when the lessor makes the underlying asset available to the Company. The Company does not assume renewals or early terminations of its leases unless it is reasonably certain to exercise these options at commencement and does not allocate consideration between lease and non-lease components.
For short-term leases, the Company records rent expense in its consolidated statements of operations on a straight-line basis over the lease term and records variable lease payments as incurred.
Convertible Senior Notes
The Company accounts for the issuance of convertible senior notes in accordance with FASB ASC Subtopic 470-20, Debt with Conversion and Other Options. Pursuant to ASC Subtopic 470-20, as the Notes have a net settlement feature and may be settled wholly or partially in cash upon conversion, the Company is required to separately account for the liability (debt) and equity (conversion option) components of the instrument. The carrying amount of the liability component is computed by estimating the fair value of a similar liability without the conversion option using income and market based approaches. For the income-based approach, the Company uses a convertible bond pricing model that includes several assumptions such as volatility, the risk-free rate, and observable trading activity for the Company's existing Notes. For the market-based approach, the Company observes the price of derivative instruments purchased in conjunction with our convertible senior note issuances or the Company evaluates issuances of convertible debt securities by other companies with similar credit risk ratings at the time of issuance. The amount of the equity component is then calculated by deducting the fair value of the liability component from the principal amount of the instrument. This difference represents a debt discount that is amortized to interest expense over the respective terms of the Notes using an effective interest rate method. The equity component is not remeasured as long as it continues to meet the conditions for equity classification. In accounting for the issuance costs related to the Notes, the allocation of issuance costs incurred between the liability and equity components were based on their relative values.
Similarly, in accordance with ASC Subtopic 470-20, transactions involving contemporaneous exchanges of cash between the same debtor and creditor in connection with the issuance of a new debt obligation and satisfaction of an existing debt obligation by the debtor should be evaluated as a modification or an exchange transaction depending on whether the exchange is determined to have substantially different terms. When the exchange is deemed to have substantially different terms due to a significant difference between the value of the conversion option immediately prior to and after the exchange, the transaction is accounted for as a debt extinguishment. Pursuant to ASC Subtopic 470-20, total consideration for the satisfaction of an existing debt obligation is separated into liability and equity components by estimating the fair value of a similar liability without a conversion option and assigning the residual value to the equity component. The effective interest rate used to estimate the fair value of the liability component is based on the income and market based approaches used to determine the effective interest rate of the new debt obligation, adjusted for the remaining tenor of the extinguished debt. The difference between the fair value and the amortized carrying value of the extinguished debt, net of the proportionate amounts of unamortized debt discount and remaining unamortized debt issuance costs, is recorded as a gain or loss on extinguishment.
Advertising Expenses
Advertising costs are expensed as incurred. Advertising expense was $33.1 million, $17.0 million, and $10.0 million for the years ended January 31, 2021, 2020 and 2019.
Income Taxes
The Company accounts for income taxes in accordance with the liability method of accounting for income taxes. Under this method, the Company recognizes deferred tax assets and liabilities for the expected future tax consequences of temporary differences between the financial reporting and tax basis of assets and liabilities, as well as for operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates that are expected to apply to taxable income for the years in which those tax assets and liabilities are expected to be realized or settled.
The Company records a valuation allowance to reduce its deferred tax assets to the net amount that the Company believes is more likely than not to be realized. In assessing the need for a valuation allowance, the Company has considered its historical levels of income, expectations of future taxable income and ongoing tax planning strategies. Because of the uncertainty of the realization of the deferred tax assets, the Company has recorded a full valuation allowance against its deferred tax assets. Realization of its deferred tax assets is dependent primarily upon future U.S. taxable income.
The Company recognizes and measures tax benefits from uncertain tax positions using a two-step approach.
The first step is to evaluate the tax position taken or expected to be taken by determining if the weight of available evidence indicates that it is more likely than not that the tax position will be sustained in an audit, including resolution of any related appeals or litigation processes. The second step is to measure the tax benefit as the largest amount that is more than 50% likely to be realized upon ultimate settlement. Significant judgment is required to evaluate uncertain tax positions.
Although the Company believes that it has adequately reserved for its uncertain tax positions, it can provide no assurance that the final tax outcome of these matters will not be materially different. The Company evaluates its uncertain tax position on a regular basis and evaluations are based on a number of factors, including changes in facts and circumstances, changes in tax law, correspondence with tax authorities during the course of an audit and effective settlement of audit issues.
To the extent that the final tax outcome of these matters is different than the amounts recorded, such differences will affect the provision for income taxes in the period in which such determination is made and could have a material impact on the Company’s financial condition and results of operations. The provision for income taxes includes the effects of any accruals that the Company believes are appropriate, as well as the related net interest and penalties.
Concentrations of Risk and Significant Customers
The Company’s financial instruments that are exposed to concentrations of credit risk consist primarily of cash and cash equivalents, short-term investments and accounts receivable. Cash and cash equivalents and short-term investments are currently held in three financial institutions and, at times, may exceed federally insured limits.
As of January 31, 2021 and 2020 and for each of the three years ended January 31, 2021, no single customer represented greater than 10% of accounts receivable or greater than 10% of revenue, respectively.
In order to reduce the risk of downtime of the Company’s subscription services, the Company uses data center facilities operated by a third-party located in Virginia, Oregon, Ohio, Germany, Ireland, Singapore and Sydney. The Company has internal procedures to restore services in the event of disaster at any of its current data center facilities. Even with these procedures for disaster recovery in place, the Company’s subscription services could be significantly interrupted during the time period following a disaster at one of its sites and the subsequent restoration of services at another site.
Geographical Information
Revenue by location is determined by the billing address of the customer. The following table sets forth revenue by geographic area (in thousands): 
 Year Ended January 31,
 202120202019
United States$701,635 $494,529 $337,367 
International133,789 91,538 61,887 
Total$835,424 $586,067 $399,254 
Other than the United States, no individual country exceeded 10% of total revenue for the years ended January 31, 2021, 2020 and 2019.
Property and equipment by geographic location is based on the location of the legal entity that owns the asset. As of January 31, 2021 and 2020, substantially all of the Company’s property and equipment was located in the United States.
Net Loss per Share
The Company computes basic and diluted net loss per share attributable to common stockholders in conformity with the two-class method required for participating securities. Under the two-class method, basic net loss per share attributable to common stockholders is calculated by dividing the net loss attributable to common stockholders by the weighted-average number of shares of common stock outstanding during the period, less shares subject to repurchase, without consideration for potentially dilutive securities as they do not share in losses. The diluted net loss per share attributable to common stockholders is computed giving effect to all potential dilutive common stock equivalents outstanding for the period. For purposes of this calculation, options to purchase common stock, unvested restricted stock units (RSUs) purchase rights issued under the 2017 Employee Stock Purchase Plan shares subject to repurchase from early exercised options, unvested common stock and restricted stock issued in connection with certain business combinations, convertible senior notes and warrants are considered common stock equivalents but have been excluded from the calculation of diluted net loss per share attributable to common stockholders as their effect is antidilutive. Since the Company's IPO, Class A and Class B common stock are the only outstanding equity of the Company. The rights of the holders of Class A and Class B common stock are identical, except with respect to voting and conversion rights. See Note 15.
Recently Adopted Accounting Pronouncements
In June 2016, the FASB issued Accounting Standards Update (ASU) 2016-13, which changes the existing incurred loss impairment model for financial assets held at amortized cost. The new model uses a forward-looking expected loss method to calculate credit loss estimates. ASU 2016-13 also eliminates the concept of other-than-temporary impairment and requires credit losses related to available-for-sale debt securities to be recorded through an allowance for credit losses rather than as a reduction in the amortized cost basis of the securities. These changes will result in earlier recognition of credit losses. The Company adopted the requirements of ASU 2016-13 as of February 1, 2020 on a modified retrospective basis. The adoption of this standard did not have a material impact on the Company’s consolidated financial statements.
In August 2018, the FASB issued ASU No. 2018-15, Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract (ASU 2018-15), which requires a customer in a cloud computing arrangement that is a service contract to follow the internal-use software guidance in Accounting Standards Codification 350-40 to determine which implementation costs to defer and recognize as an asset. The Company adopted the requirements of ASU 2018-15 as of February 1, 2020 on a prospective basis. The adoption of this standard did not have a material impact on the Company’s consolidated financial statements.
In December 2019, the FASB issued ASU No. 2019-12, Simplifying the Accounting for Income Taxes (ASU 2019-12), as part of its Simplification Initiative to reduce the cost and complexity in accounting for income taxes. ASU 2019-12 removes certain exceptions related to the approach for intraperiod tax allocation and clarifies the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences. The guidance is effective for interim and annual periods beginning after December 15, 2020, with early adoption permitted. The Company early adopted ASU 2019-12 as of February 1, 2020 on a
prospective basis. The adoption of this standard did not have a material impact on the Company’s consolidated financial statements.
Recently Issued Accounting Pronouncements Not Yet Adopted
In August 2020, the FASB issued ASU No. 2020-06, Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity (ASU 2020-06), which simplifies the accounting for certain financial instruments with characteristics of liabilities and equity, including convertible instruments and contracts in an entity’s own equity. Among other changes, ASU 2020-06 removes from GAAP the liability and equity separation model for convertible instruments with a cash conversion feature, and as a result, after adoption, entities will no longer separately present in equity an embedded conversion feature for such debt. Similarly, the embedded conversion feature will no longer be amortized into income as interest expense over the life of the instrument. Instead, entities will account for a convertible debt instrument wholly as debt unless (1) a convertible instrument contains features that require bifurcation as a derivative under ASC Topic 815, Derivatives and Hedging, or (2) a convertible debt instrument was issued at a substantial premium. Among other potential impacts, this change is expected to reduce reported interest expense, increase reported net income, and result in a reclassification of certain conversion feature-related balance sheet amounts from stockholders’ equity to liabilities as it relates to the Company’s convertible senior notes. Additionally, ASU 2020-06 requires the application of the if-converted method to calculate the impact of convertible instruments on diluted earnings per share (EPS), which is consistent with the Company’s accounting treatment under the current standard. ASU 2020-06 is effective for fiscal years beginning after December 15, 2021, with early adoption permitted for fiscal years beginning after December 15, 2020, and can be adopted on either a fully retrospective or modified retrospective basis. The Company is currently evaluating the timing, method of adoption and overall impact of this standard on its consolidated financial statements.
v3.20.4
Business Combinations
 12 Months Ended
Jan. 31, 2021
Business Combinations [Abstract]  
Business Combinations Business Combinations
During the year ended year ended January 31, 2020, the Company completed a business combination for a purchase price of $44.2 million, net of $1.1 million in cash acquired. The Company recorded $15.7 million for developed technology intangible assets with an estimated useful life of five years and recorded $29.9 million of goodwill which is primarily attributed to the assembled workforce as well as the integration of the acquired technology. The Company incurred $3.0 million of acquisition-related costs, which were recorded as general and administrative expense in the quarter ended April 30, 2019.
The Company also entered into deferred compensation arrangements in connection with prior acquisitions totaling $10.8 million, of which $3.0 million was recognized as compensation during the year ended January 31, 2021. The remaining deferred compensation balance is immaterial.
These acquisitions did not have a material impact on the Company’s consolidated financial statements; therefore, historical and proforma disclosures have not been presented.
v3.20.4
Cash Equivalents and Short-term Investments
 12 Months Ended
Jan. 31, 2021
Investments, Debt and Equity Securities [Abstract]  
Cash Equivalents and Short-term Investments Cash Equivalents and Short-term Investments
The amortized cost, unrealized gain (loss) and estimated fair value of the Company’s cash equivalents and short-term investments as of January 31, 2021 and 2020 were as follows (in thousands):  
 As of January 31, 2021
 
Amortized
Cost
Unrealized
Gain
Unrealized
Loss
Estimated
Fair Value 
Cash equivalents:    
Money market funds$311,257 $— $— $311,257 
Total cash equivalents311,257 — — 311,257 
Short-term investments:    
U.S. treasury securities1,888,882 1,571 (22)1,890,431 
Corporate debt securities230,726 429 (2)231,153 
Total short-term investments2,119,608 2,000 (24)2,121,584 
Total$2,430,865 $2,000 $(24)$2,432,841 
 As of January 31, 2020
 
Amortized
Cost
Unrealized
Gain
Unrealized
Loss
Estimated
Fair Value 
Cash equivalents:    
Money market funds$416,584 $— $— $416,584 
U.S. treasury securities19,996 — — 19,996 
Total cash equivalents436,580 — — 436,580 
Short-term investments:   
U.S. treasury securities575,920 686 (8)576,598 
Corporate debt securities305,859 519 — 306,378 
Total short-term investments881,779 1,205 (8)882,976 
Total$1,318,359 $1,205 $(8)$1,319,556 
All short-term investments were designated as available-for-sale securities as of January 31, 2021 and 2020.
The following table presents the contractual maturities of the Company's short-term investments as of January 31, 2021 and 2020 (in thousands):
 As of January 31, 2021
 
Amortized
Cost
Estimated
Fair Value
Due within one year$1,509,241 $1,510,810 
Due between one to five years610,367 610,774 
Total$2,119,608 $2,121,584 
 As of January 31, 2021 and 2020, the Company included $31.0 million and nil, respectively, of unsettled maturities of short-term investments in Prepaid expenses and other current assets.
The Company included $10.5 million and $5.7 million of interest receivable in Prepaid expenses and other current assets as of January 31, 2021 and 2020, respectively. The Company did not recognize an allowance for credit losses against interest receivable as of January 31, 2021 and 2020 because such potential losses were not material.
The Company had 10 and 7 short-term investments in unrealized loss positions as of January 31, 2021 and 2020, respectively. There were no material gross unrealized gains or losses from available-for-sale securities and no material realized gains or losses from available-for-sale securities that were reclassified out of accumulated other comprehensive income for the years ended January 31, 2021, 2020 and 2019.
For available-for-sale debt securities that have unrealized losses, the Company evaluates whether (i) the Company has the intention to sell any of these investments, (ii) it is not more likely than not that the Company will be required to sell any of these available-for-sale debt securities before recovery of the entire amortized cost basis
and (iii) the decline in the fair value of the investment is due to credit or non-credit related factors. Based on this evaluation, the Company determined that for short-term investments, there were no material credit or non-credit related impairments as of January 31, 2021 and 2020.
v3.20.4
Fair Value Measurements
 12 Months Ended
Jan. 31, 2021
Fair Value Disclosures [Abstract]  
Fair Value Measurements Fair Value Measurements
The Company measures its financial assets at fair value each reporting period using a fair value hierarchy that prioritizes the use of observable inputs and minimizes the use of unobservable inputs when measuring fair value. A financial instrument’s classification within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement.
 Three levels of inputs may be used to measure as follows:
Level 1—Valuations based on observable inputs that reflect quoted prices for identical assets or liabilities in
active markets.
Level 2—Valuations based on other inputs that are directly or indirectly observable in the marketplace.
Level 3—Valuations based on unobservable inputs that are supported by little or no market activity.
Assets and Liabilities Measured at Fair Value on a Recurring Basis
The following table presents information about the Company’s financial assets that were measured at fair value on a recurring basis using the above input categories (in thousands):   
 As of January 31, 2021
 Level 1
Level 2 
Level 3Total
Assets:    
Cash equivalents:    
Money market funds$311,257 $— $— $311,257 
Total cash equivalents311,257 — — 311,257 
Short-term investments:    
U.S. treasury securities— 1,890,431 — 1,890,431 
Corporate debt securities— 231,153 — 231,153 
Total short-term investments— 2,121,584 — 2,121,584 
Total cash equivalents and short-term investments$311,257 $2,121,584 $— $2,432,841 
 As of January 31, 2020
 Level 1
Level 2 
Level 3Total
Assets:    
Cash equivalents:    
Money market funds$416,584 $— $— $416,584 
U.S. treasury securities— 19,996 — 19,996 
Total cash equivalents416,584 19,996 — 436,580 
Short-term investments:    
U.S. treasury securities— 576,598 — $576,598 
Corporate debt securities— 306,378 — 306,378 
Total short-term investments— 882,976 — 882,976 
Total cash equivalents and short-term investments$416,584 $902,972 $— $1,319,556 
The carrying amounts of certain financial instruments, including cash held in banks, accounts receivable and accounts payable approximate fair value due to their short-term maturities and are excluded from the fair value table above.  
Fair Value Measurements of Other Financial Instruments
The following table presents the carrying amounts and estimated fair values of our financial instruments that are not recorded at fair value on the consolidated balance sheets (in thousands):
As of January 31, 2021
Net Carrying Amount(1)
Estimated
Fair Value 
2023 convertible senior notes$36,092 $216,926 
2025 convertible senior notes$885,465 $1,605,508 
2026 convertible senior notes$867,643 $1,493,850 
(1)    Before unamortized debt issuance costs.
The principal amounts of the 2023 Notes, the 2025 Notes and the 2026 Notes are $40.2 million, $1,060.0 million and $1,150.0 million, respectively. The difference between the principal amounts of the 2023 Notes, the 2025 Notes and the 2026 Notes and the respective net carrying amounts before unamortized debt issuance costs represents the unamortized debt discount (See Note 9 for additional details). The estimated fair values of the Notes, which are Level 2 financial instruments, were determined based on the quoted bid prices of the Notes in an over-the-counter market on the last trading day of the reporting period. As of January 31, 2021, the difference between the net carrying amount of the Notes and their estimated fair values represented the equity conversion value premium the market assigned to the Notes. Based on the closing price of our common stock of $259.01 on January 31, 2021, the if-converted value of the 2023 Notes, 2025 Notes and 2026 Notes exceeded the principal amount of $40.2 million, $1,060.0 million and $1,150.0 million, respectively
v3.20.4
Goodwill and Intangible Assets, net
 12 Months Ended
Jan. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets, net Goodwill and Intangible Assets, net
Goodwill
As of January 31, 2021 and 2020, goodwill was $48.0 million. During the year ended January 31, 2020, the Company recorded $29.9 million of goodwill in connection with a business combination that was completed in March 2019. No goodwill impairments were recorded during the years ended January 31, 2021, 2020 and 2019.
Intangible Assets, net
Intangible assets consisted of the following (in thousands):  
 As of January 31, 2021
GrossAccumulated AmortizationWrite-offsNet
Capitalized internal-use software costs$30,259 $(19,478)$— $10,781 
Purchased developed technology28,800 (12,694)— 16,106 
Software licenses126 (4)— 122 
 $59,185 $(32,176)$— $27,009 
 As of January 31, 2020
GrossAccumulated AmortizationWrite-offsNet
Capitalized internal-use software costs$24,890 $(14,828)$(119)$9,943 
Purchased developed technology28,800 (6,321)— 22,479 
Software licenses1,112 (1,005)— 107 
 $54,802 $(22,154)$(119)$32,529 

The Company capitalized $5.5 million and $5.1 million of internal-use software costs during the years ended January 31, 2021 and 2020, respectively.
During the year ended January 31, 2020, the Company recorded $24.2 million of purchased developed technology in connection with a business combination and an asset acquisition. The remaining weighted-average useful life of all purchased developed technology was 3.1 years and 3.9 years as of January 31, 2021, and 2020, respectively.
Amortization expense of intangible assets for the years ended January 31, 2021, 2020 and 2019 was $11.1 million, $10.6 million, and $5.8 million, respectively.
As of January 31, 2021, estimated remaining amortization expense for the intangible assets by fiscal year was as follows (in thousands):
Remaining Amortization
2022$10,354 
20238,416 
20247,354 
2025885 
Total$27,009 
v3.20.4
Balance Sheet Components
 12 Months Ended
Jan. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Balance Sheet Components Balance Sheet Components
Property and Equipment, net
Property and equipment consisted of the following (in thousands):  
 As of January 31,
 20212020
Computers and equipment$1,242 $3,567 
Furniture and fixtures13,948 11,014 
Leasehold improvements69,862 55,363 
Property and equipment, gross85,052 69,944 
Less accumulated depreciation(22,269)(16,409)
Property and equipment, net$62,783 $53,535 
Depreciation expense was $9.4 million, $8.8 million and $5.7 million for the years ended January 31, 2021, 2020 and 2019, respectively.
Allowances
The Company’s accounts receivable allowances for the years ended January 31, 2021, 2020 and 2019 were as follows (in thousands):  
 As of January 31,
 202120202019
Balance, beginning of period$1,166 $2,098 $1,472 
Additions (reductions)3,252 (673)888 
Write-offs(967)(259)(262)
Balance, end of period$3,451 $1,166 $2,098 
Accrued Expenses and Other Current Liabilities
Accrued expenses and other current liabilities consisted of the following (in thousands):  
 As of January 31,
 20212020
Accrued expenses$24,717 $22,530 
Accrued taxes payable2,462 1,591 
Operating lease liabilities23,403 12,064 
Other3,147 702 
Accrued expenses and other current liabilities$53,729 $36,887 
Other Liabilities, Noncurrent
Other liabilities, noncurrent consisted of the following (in thousands):  
 As of January 31,
 20212020
Deferred tax liabilities$3,877 $1,558 
Other7,498 3,803 
Other liabilities, noncurrent$11,375 $5,361 
v3.20.4
Deferred Revenue and Performance Obligations
 12 Months Ended
Jan. 31, 2021
Revenue from Contract with Customer [Abstract]  
Deferred Revenue and Performance Obligations Deferred Revenue and Performance Obligations
Deferred Revenue
Deferred revenue, which is a contract liability, consists primarily of payments received and accounts receivable recorded in advance of revenue recognition under the Company’s contracts with customers and is recognized as the revenue recognition criteria are met.
Subscription revenue recognized during the years ended January 31, 2021 and 2020 that was included in the deferred revenue balances at the beginning of the respective periods was $361.0 million and $241.1 million, respectively. Professional services and other revenue recognized in the years ended January 31, 2021 and 2020 from deferred revenue balances at the beginning of the respective periods was not material.
Transaction Price Allocated to the Remaining Performance Obligations
Transaction price allocated to the remaining performance obligations represents all future, non-cancellable contracted revenue that has not yet been recognized, inclusive of deferred revenue that has been invoiced and non-cancellable amounts that will be invoiced and recognized as revenue in future periods.
As of January 31, 2021, total remaining non-cancellable performance obligations under the Company’s subscription contracts with customers was approximately $1,796.9 million. Of this amount, the Company expects to recognize revenue of approximately $841.8 million, or 47%, over the next 12 months, with the balance to be recognized as revenue thereafter. Remaining performance obligations for professional services and other contracts as of January 31, 2021 were not material.
v3.20.4
Convertible Senior Notes, Net
 12 Months Ended
Jan. 31, 2021
Debt Disclosure [Abstract]  
Convertible Senior Notes, Net Convertible Senior Notes, Net
2023 Convertible Senior Notes
The 2023 Notes are senior, unsecured obligations of the Company, and bear interest at a fixed rate of 0.25% per year. Interest is payable in cash semi-annually in arrears on February 15 and August 15 of each year, beginning on August 15, 2018. The 2023 Notes mature on February 15, 2023 unless earlier repurchased or converted. The Company may not redeem the 2023 Notes prior to maturity. The total net proceeds from the 2023 Notes, after deducting initial purchasers’ discounts and debt issuance costs, was $335.0 million.
In September 2019, the Company used part of the net proceeds from the issuance of the 2025 Notes to repurchase a portion of the 2023 Notes, which consisted of a repurchase of $224.4 million aggregate principal amount of the 2023 Notes in privately-negotiated transactions for aggregate consideration of $604.8 million, consisting of approximately $224.4 million in cash and approximately 3.0 million shares of Class A common stock. The $604.8 million in aggregate consideration was allocated between the debt and equity components in the amounts of $197.7 million and $407.1 million, respectively, using an effective interest rate of 4.00% to determine the fair value of the liability component. As of the repurchase date, the carrying value of the notes subject to the First Partial Repurchase of 2023 Notes, net of unamortized debt discount and issuance costs, was $183.1 million. The First Partial Repurchase of 2023 Notes resulted in a $14.6 million loss on early debt extinguishment during the year ended January 31, 2020, of which $3.8 million consisted of unamortized debt issuance costs.
In June 2020, the Company used part of the net proceeds from the issuance of the 2026 Notes to repurchase a portion of the 2023 Notes, which consisted of a repurchase of $69.9 million aggregate principal amount of the 2023 Notes in privately-negotiated transactions, for aggregate consideration of $260.5 million, consisting of approximately $0.2 million in cash and approximately 1.4 million shares of Class A common stock. The $260.5
million in aggregate consideration was allocated between the debt and equity components in the amounts of $61.8 million and $198.7 million respectively, using an effective interest rate of 4.90% to determine the fair value of the liability component. As of the repurchase date, the carrying value of the notes subject to the Second Partial Repurchase of 2023 Notes, net of unamortized debt discount and issuance costs, was $59.6 million. The Second Partial Repurchase of 2023 Notes resulted in a $2.2 million loss on early debt extinguishment during the year ended January 31, 2021, of which $1.0 million consisted of unamortized debt issuance costs.
The interest rates used in the 2023 Notes Partial Repurchases were based on the income and market based approaches used to determine the effective interest rate of the 2025 Notes and 2026 Notes, adjusted for the remaining tenor of the 2023 Notes. As of January 31, 2021, $40.2 million of principal remained outstanding on the 2023 Notes.
The terms of the 2023 Notes are governed by an Indenture by and between the Company and Wilmington Trust, National Association, as Trustee (the 2023 Indenture). Upon conversion, the 2023 Notes may be settled in cash, shares of Class A common stock or a combination of cash and shares of Class A common stock, at the Company’s election.
The 2023 Notes are convertible at an initial conversion rate of 20.6795 shares of Class A common stock per $1,000 principal amount of the 2023 Notes, which is equal to an initial conversion price of approximately $48.36 per share of Class A common stock, subject to adjustment under certain circumstances in accordance with the terms of the 2023 Indenture. Prior to the close of business on the business day immediately preceding October 15, 2022, holders of the 2023 Notes may convert all or a portion of their 2023 Notes only in multiples of $1,000 principal amount, under the following circumstances:
•during any fiscal quarter commencing after the fiscal quarter ending on April 30, 2018 (and only during such fiscal quarter), if the last reported sale price of Class A common stock for at least 20 trading days (whether or not consecutive) during the period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding fiscal quarter is greater than or equal to 130% of the conversion price of the 2023 Notes on each applicable trading day;
•during the five business day period after any five consecutive trading day period in which the trading price per $1,000 principal amount of the 2023 Notes for each trading day of that five consecutive trading day period was less than 98% of the product of the last reported sale price of Class A common stock and the conversion rate on such trading day; or
•upon the occurrence of specified corporate events, as described in the 2023 Indenture.
On or after October 15, 2022 until the close of business on the second scheduled trading day immediately preceding the maturity date, holders may convert all or any portion of their 2023 Notes regardless of the foregoing circumstances. For at least 20 trading days during the period of 30 consecutive trading days ended January 31, 2021, the last reported sale price of the Company’s common stock was equal to or exceeded 130% of the conversion price of the 2023 Notes on each applicable trading day. As a result, the 2023 Notes are convertible at the option of the holders during the fiscal quarter ending April 30, 2021 and were classified as current liabilities on the consolidated balance sheet as of January 31, 2021.
During the year ended January 31, 2021, the Company paid approximately $0.3 million in cash and issued approximately 0.2 million shares of Class A common stock to settle approximately $10.4 million principal amount of 2023 Notes (not in connection with the Second Partial Repurchase of the 2023 Notes). The loss on early note conversion was not material. During the fourth quarter of fiscal 2021, the Company received additional conversion requests, and approximately $4.3 million aggregate principal amount of the 2023 Notes were primarily settled in shares of Class A common stock in the first quarter of fiscal 2022. In addition, subsequent to January 31, 2021, the Company received conversion requests for approximately $3.2 million aggregate principal amount of the 2023 Notes.
Holders of the 2023 Notes who convert their 2023 Notes in connection with certain corporate events that constitute a make-whole fundamental change (as defined in the 2023 Indenture) are, under certain circumstances, entitled to an increase in the conversion rate. Additionally, in the event of a corporate event that constitutes a fundamental change (as defined in the 2023 Indenture), holders of the 2023 Notes may require the Company to repurchase all or a portion of their 2023 Notes at a price equal to 100% of the principal amount of the 2023 Notes being repurchased, plus any accrued and unpaid interest.
In accounting for the issuance of the 2023 Notes, the Company separated the 2023 Notes into liability and equity components, using an effective interest rate of 5.68% to determine the fair value of the liability component. This interest rate was based on both an income and a market based approach. For the income approach, the Company used a convertible bond pricing model, which included several assumptions including volatility and the risk-free rate. For the market approach, the Company observed the price of the Note Hedges (see below) it purchased for its 2023 Notes and also performed an evaluation of issuances of convertible debt securities by other companies with similar credit risk ratings at the time of issuance. The following table sets forth total interest expense recognized related to the 2023 Notes (in thousands):
Year Ended January 31,
20212020
Contractual interest expense$180 $606 
Amortization of debt issuance costs312 985 
Amortization of debt discount3,316 11,219 
Total$3,808 $12,810 
Total initial issuance costs of $10.0 million related to the 2023 Notes were allocated between liability and equity in the same proportion as the allocation of the total proceeds to the liability and equity components. Issuance costs attributable to the liability component are being amortized to interest expense over the respective term of the 2023 Notes using the effective interest rate method. The issuance costs attributable to the equity component were netted against the respective equity component in Additional paid-in capital. The Company initially recorded liability issuance costs of $7.7 million and equity issuance costs of $2.3 million.
The 2023 Notes, net consisted of the following (in thousands):
As of January 31, 2021
Liability component:
Principal$40,246 
Less: unamortized debt issuance costs and debt discount(4,591)
Net carrying amount$35,655 
Equity component:
2023 Notes$9,328 
Less: issuance costs(271)
Carrying amount of the equity component(1)
$9,057 
(1)    Included in the consolidated balance sheets within Additional paid-in capital.
Note Hedges
In connection with the pricing of the 2023 Notes, the Company entered into convertible note hedges with respect to its Class A common stock. The Note Hedges are purchased call options that give the Company the option to purchase, subject to anti-dilution adjustments substantially identical to those in the 2023 Notes, approximately 7.1 million shares of its Class A common stock for approximately $48.36 per share (subject to adjustment), corresponding to the approximate initial conversion price of the 2023 Notes, exercisable upon conversion of the 2023 Notes. The Note Hedges will expire in 2023, if not exercised earlier. The Note Hedges are intended to offset potential dilution to the Company’s Class A common stock and/or offset the potential cash payments that the Company could be required to make in excess of the principal amount upon any conversion of the 2023 Notes under certain circumstances. The Note Hedges are separate transactions and are not part of the terms of the 2023 Notes.
The Company paid an aggregate amount of $80.0 million for the Note Hedges. The amount paid for the Note Hedges was recorded as a reduction to Additional paid-in capital in the consolidated balance sheets.
In September 2019 and in June 2020, and in connection with the First Partial Repurchase of 2023 Notes and Second Partial Repurchase of 2023 Notes, the Company terminated Note Hedges corresponding to approximately
4.6 million and 1.4 million shares for cash proceeds of $405.9 million and $195.0 million, respectively. The proceeds were recorded as an increase to Additional paid-in capital in the consolidated balance sheets.
During the year ended January 31, 2021, the Company exercised and net-share-settled a portion of the Note Hedges, corresponding to approximately $10.4 million principal amount of 2023 Notes and received approximately 0.2 million shares of Class A common stock and an immaterial cash payment. As of January 31, 2021, Note Hedges giving the Company the option to purchase approximately 0.8 million shares (subject to adjustment) remained outstanding.
Warrants
In connection with the issuance of the 2023 Notes, the Company also entered into separate warrant transactions pursuant to which it sold net-share-settled (or, at the Company’s election subject to certain conditions, cash-settled) warrants to acquire, subject to anti-dilution adjustments, up to approximately 7.1 million shares over 80 scheduled trading days beginning in May 2023 of the Company’s Class A common stock at an initial exercise price of approximately $68.06 per share (subject to adjustment). If the Warrants are not exercised on their exercise dates, they will expire. If the market value per share of the Company’s Class A common stock exceeds the applicable exercise price of the Warrants, the Warrants could have a dilutive effect on the Company’s Class A common stock unless, subject to the terms of the Warrants, the Company elects to cash settle the Warrants. The Warrants are separate transactions and are not part of the terms of the 2023 Notes or the Note Hedges.
The Company received aggregate proceeds of $52.4 million from the sale of the Warrants in connection with the 2023 Notes. The proceeds from the sale of the Warrants were recorded as an increase to Additional paid-in capital in the consolidated balance sheets.
In September 2019 and in June 2020, and in connection with the First Partial Repurchase of 2023 Notes and Second Partial Repurchase of 2023 Notes, the Company terminated Warrants corresponding to approximately 4.6 million and 1.4 million shares for total cash payments of $358.6 million and $175.4 million, respectively. The termination payments were recorded as a decrease to Additional paid-in capital in the consolidated balance sheets.
As of January 31, 2021, Warrants to acquire up to approximately 1.0 million shares (subject to adjustment) remained outstanding.
2025 Convertible Senior Notes
The 2025 Notes are senior, unsecured obligations of the Company, and bear interest at a fixed rate of 0.125% per year. Interest is payable in cash semi-annually in arrears on March 1 and September 1 of each year, beginning on March 1, 2020. The 2025 Notes mature on September 1, 2025 unless earlier redeemed, repurchased or converted. The total net proceeds from the 2025 Notes, after deducting initial purchasers’ discounts and debt issuance costs, were $1,040.7 million.
The terms of the 2025 Notes are governed by an Indenture by and between the Company and Wilmington Trust, National Association, as Trustee (the 2025 Indenture). Upon conversion, the 2025 Notes may be settled in cash, shares of Class A common stock or a combination of cash and shares of Class A common stock, at the Company’s election.
The 2025 Notes are convertible at an initial conversion rate of 5.2991 shares of Class A common stock per $1,000 principal amount of the 2025 Notes, which is equal to an initial conversion price of approximately $188.71 per share of Class A common stock, subject to adjustment under certain circumstances in accordance with the terms of the 2025 Indenture. Prior to the close of business on the business day immediately preceding June 1, 2025, holders of the 2025 Notes may convert all or a portion of their 2025 Notes only in multiples of $1,000 principal amount, under the following circumstances:
•during any fiscal quarter commencing after the fiscal quarter ending on January 31, 2020 (and only during such fiscal quarter), if the last reported sale price of Class A common stock for at least 20 trading days (whether or not consecutive) during the period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding fiscal quarter is greater than or equal to 130% of the conversion price of the 2025 Notes on each applicable trading day;
•during the five business day period after any five consecutive trading day period in which the trading price per $1,000 principal amount of the 2025 Notes for each trading day of that five consecutive
trading day period was less than 98% of the product of the last reported sale price of Class A common stock and the conversion rate on such trading day;
•if the Company calls the notes for redemption, at any time prior to the close of business on the second scheduled trading day immediately preceding the redemption date; or
•upon the occurrence of specified corporate events, as described in the 2025 Indenture.
On or after June 1, 2025 until the close of business on the second scheduled trading day immediately preceding the maturity date, holders may convert all or any portion of their 2025 Notes regardless of the foregoing circumstances. For at least 20 trading days during the period of 30 consecutive trading days ended January 31, 2021, the last reported sale price of the Company’s common stock was equal to or exceeded 130% of the conversion price of the 2025 Notes on each applicable trading day. As a result, the 2025 Notes are convertible at the option of the holders during the fiscal quarter ending April 31, 2021 and were classified as current liabilities on the consolidated balance sheet as of January 31, 2021. No requests to convert material amounts of notes are currently outstanding.
The Company may redeem for cash all or any portion of the 2025 Notes, at its option, on or after September 6, 2022, if the last reported sale price of the Company’s Class A common stock has been at least 130% of the conversion price then in effect for at least 20 trading days (whether or not consecutive) during any 30 consecutive trading day period (including the last trading day of such period) ending on and including the trading day preceding the date on which the Company provides notice of redemption at a redemption price equal to 100% of the principal amount of the 2025 Notes to be redeemed, plus any accrued and unpaid interest to, but excluding, the redemption date. During the year ended January 31, 2021, the Company did not redeem any of the 2025 Notes.
Holders of the 2025 Notes who convert their 2025 Notes in connection with certain corporate events that constitute a make-whole fundamental change (as defined in the 2025 Indenture) or in connection with the Company’s issuance of a redemption notice are, under certain circumstances, entitled to an increase in the conversion rate. Additionally, in the event of a corporate event that constitutes a fundamental change (as defined in the Indenture), holders of the 2025 Notes may require the Company to repurchase all or a portion of their 2025 Notes at a price equal to 100% of the principal amount of the 2025 Notes being repurchased, plus any accrued and unpaid interest.
In accounting for the issuance of the 2025 Notes, the Company separated the 2025 Notes into liability and equity components using an effective interest rate of 4.10% to determine the fair value of the liability component. This interest rate was based on both an income and a market based approach. For the income approach, the Company used a convertible bond pricing model, which included several assumptions including volatility and the risk-free rate. For the market approach, the Company performed an evaluation of issuances of convertible debt securities by other companies with similar credit risk ratings at the time of issuance. The following table sets forth total interest expense recognized related to the 2025 Notes (in thousands):
Year Ended January 31,
20212020
Contractual interest expense$1,325 $519 
Amortization of debt issuance costs2,097 769 
Amortization of debt discount33,932 12,919 
Total$37,354 $14,207 
Total issuance costs of $19.3 million related to the 2025 Notes were allocated between liability and equity in the same proportion as the allocation of the total proceeds to the liability and equity components. Issuance costs attributable to the liability component are being amortized to interest expense over the respective term of the 2025 Notes using the effective interest rate method. The issuance costs attributable to the equity component were netted against the respective equity component in Additional paid-in capital. The Company recorded liability issuance costs of $15.3 million and equity issuance costs of $4.0 million.
The 2025 Notes, net consisted of the following (in thousands):
As of January 31, 2021
Liability component:
Principal$1,060,000 
Less: unamortized debt issuance costs and debt discount(186,971)
Net carrying amount$873,029 
Equity component:At Issuance
2025 Notes$221,387 
Less: issuance costs(4,040)
Carrying amount of the equity component(1)
$217,347 
(1)    Included in the consolidated balance sheets within Additional paid-in capital.
2025 Capped Calls
In connection with the pricing of the 2025 Notes, the Company entered into capped call transactions with respect to its Class A common stock. The 2025 Capped Calls are purchased call options that give the Company the option to purchase, subject to anti-dilution adjustments substantially identical to those in the 2025 Notes, approximately 5.6 million shares of its Class A common stock for approximately $188.71 per share (subject to adjustment), corresponding to the approximate initial conversion price of the 2025 Notes, exercisable upon conversion of the 2025 Notes. The 2025 Capped Calls have initial cap prices of $255.88 per share (subject to adjustment) and will expire in 2025, if not exercised earlier. The 2025 Capped Calls are intended to offset potential dilution to the Company’s Class A common stock and/or offset the potential cash payments that the Company could be required to make in excess of the principal amount upon any conversion of the 2025 Notes under certain circumstances. The 2025 Capped Calls are separate transactions and are not part of the terms of the 2025 Notes.
The Company paid an aggregate amount of $74.1 million for the 2025 Capped Calls. The amount paid for the 2025 Capped Calls was recorded as a reduction to Additional paid-in capital in the consolidated balance sheets.
2026 Convertible Senior Notes
The 2026 Notes are senior, unsecured obligations of the Company, and bear interest at a fixed rate of 0.375% per year. Interest is payable in cash semi-annually in arrears on June 15 and December 15 of each year, beginning on December 15, 2020. The 2026 Notes mature on June 15, 2026 unless earlier redeemed, repurchased or converted. The total net proceeds from the 2026 Notes, after deducting initial purchasers’ discounts and debt issuance costs, were $1,134.8 million.
The terms of the 2026 Notes are governed by an Indenture by and between the Company and Wilmington Trust, National Association, as Trustee (the 2026 Indenture, and together with the 2023 Indenture and 2025 Indenture, the Indentures). Upon conversion, the 2026 Notes may be settled in cash, shares of Class A common stock or a combination of cash and shares of Class A common stock, at the Company’s election.
The 2026 Notes are convertible at an initial conversion rate of 4.1912 shares of Class A common stock per $1,000 principal amount of the 2026 Notes, which is equal to an initial conversion price of approximately $238.60 per share of Class A common stock, subject to adjustment under certain circumstances in accordance with the terms of the Indenture. Prior to the close of business on the business day immediately preceding March 15, 2026, holders of the 2026 Notes may convert all or a portion of their 2026 Notes only in multiples of $1,000 principal amount, under the following circumstances:
•during any fiscal quarter commencing after the fiscal quarter ending on October 31, 2020 (and only during such fiscal quarter), if the last reported sale price of our Class A common stock for at least 20 trading days (whether or not consecutive) during the period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding fiscal quarter is greater than or equal to 130% of the conversion price of the 2026 Notes on each applicable trading day;
•during the five business day period after any five consecutive trading day period in which the trading price per $1,000 principal amount of the 2026 Notes for each trading day of that five consecutive trading day period was less than 98% of the product of the last reported sale price of our Class A common stock and the conversion rate on such trading day;
•if the Company calls the notes for redemption, at any time prior to the close of business on the second scheduled trading day immediately preceding the redemption date; or
•upon the occurrence of specified corporate events, as described in the 2026 Indenture.
On or after March 15, 2026 until the close of business on the second scheduled trading day immediately preceding the maturity date, holders may convert all or any portion of their 2026 Notes regardless of the foregoing circumstances. During the year ended January 31, 2021, the conditions allowing holders of the 2026 Notes to convert were not met.
The Company may redeem for cash all or any portion of the 2026 Notes, at its option, on or after June 20, 2023, if the last reported sale price of the Company’s Class A common stock has been at least 130% of the conversion price then in effect for at least 20 trading days (whether or not consecutive), including the trading day immediately preceding the date on which we provide notice of redemption, during any 30 consecutive trading day period ending on and including the trading day preceding the date on which we provide notice of redemption price equal to 100% of the principal amount of the notes to be redeemed, plus any accrued and unpaid interest to, but excluding, the redemption date. During the year ended January 31, 2021, the Company did not redeem any of the 2026 Notes.
Holders of the 2026 Notes who convert their 2026 Notes in connection with certain corporate events that constitute a make-whole fundamental change (as defined in the Indenture) or in connection with the Company’s issuance of a redemption notice are, under certain circumstances, entitled to an increase in the conversion rate. Additionally, in the event of a corporate event that constitutes a fundamental change (as defined in the Indenture), holders of the 2026 Notes may require the Company to repurchase all or a portion of their 2026 Notes at a price equal to 100% of the principal amount of the 2026 Notes being repurchased, plus any accrued and unpaid interest.
In accounting for the issuance of the 2026 Notes, the Company separated the 2026 Notes into liability and equity components using an effective interest rate of 5.75% to determine the fair value of the liability component. This interest rate was based on both an income and a market based approach. For the income approach, the Company used a convertible bond pricing model, which included several assumptions including volatility, the risk-free rate and observable trading activity for the Company’s existing Notes. For the market approach, the Company performed an evaluation of issuances of convertible debt securities by other companies with similar credit risk ratings at the time of issuance. The following table sets forth total interest expense recognized related to the 2026 Notes (in thousands):
Year Ended
January 31, 2021
Contractual interest expense$2,731 
Amortization of debt issuance costs813 
Amortization of debt discount27,954 
Total$31,498 

Total issuance costs of $15.2 million related to the 2026 Notes were allocated between liability and equity in the same proportion as the allocation of the total proceeds to the liability and equity components. Issuance costs attributable to the liability component are being amortized to interest expense over the respective term of the 2026 Notes using the effective interest rate method. The issuance costs attributable to the equity component were netted against the respective equity component in Additional paid-in capital. The Company recorded liability issuance costs of $11.1 million and equity issuance costs of $4.1 million.
The 2026 Notes, net consisted of the following (in thousands):
As of January 31, 2021
Liability component:
Principal$1,150,000 
Less: unamortized debt issuance costs and debt discount(292,613)
Net carrying amount$857,387 
At Issuance
Equity component:
2026 Notes$310,311 
Less: issuance costs(4,090)
Carrying amount of the equity component(1)
$306,221 
(1) Included in the consolidated balance sheets within Additional paid-in capital.
2026 Capped Calls
In connection with the pricing of the 2026 Notes, the Company entered into capped call transactions with respect to its Class A common stock. The 2026 Capped Calls are purchased call options that give the Company the option to purchase, subject to anti-dilution adjustments substantially identical to those in the 2026 Notes, approximately 4.8 million shares of its Class A common stock for approximately $238.60 per share (subject to adjustment), corresponding to the approximate initial conversion price of the 2026 Notes, exercisable upon conversion of the 2026 Notes. The 2026 Capped Calls have initial cap prices of $360.14 per share (subject to adjustment) and will expire in 2026, if not exercised earlier. The 2026 Capped Calls are intended to offset potential dilution to the Company’s Class A common stock and/or offset the potential cash payments that the Company could be required to make in excess of the principal amount upon any conversion of the 2026 Notes under certain circumstances. The 2026 Capped Calls are separate transactions and are not part of the terms of the 2026 Notes.
The Company paid an aggregate amount of $134.0 million for the 2026 Capped Calls. The amount paid for the 2026 Capped Calls was recorded as a reduction to Additional paid-in capital in the consolidated balance sheets.
v3.20.4
Leases
 12 Months Ended
Jan. 31, 2021
Leases [Abstract]  
Leases Leases
The Company has entered into various non-cancellable office space operating leases with original lease periods expiring between 2021 and 2028. These leases do not contain material variable rent payments, residual value guarantees, covenants or other restrictions. The Company's corporate headquarters lease in San Francisco has a 10 year term, which expires in October 2028. The Company is entitled to two five-year options to extend this lease, subject to certain requirements.
Operating lease costs were as follows (in thousands):
Year Ended January 31,
202120202019
Operating lease costs(1)
$33,076 $23,193 $23,290 
(1)    Amounts are presented exclusive of sublease income and include short-term leases, which are immaterial.
The weighted-average remaining term of the Company’s operating leases was 6.8 and 7.9 years and the weighted-average discount rate used to measure the present value of the operating lease liabilities was 5.6% and 5.7% as of January 31, 2021 and January 31, 2020, respectively.
Maturities of the Company’s operating lease liabilities, which do not include short-term leases, as of January 31, 2021 were as follows (in thousands):
Operating Leases
2022$34,410 
202337,910 
202438,823 
202536,289 
202626,839 
Thereafter73,135 
Total lease payments247,406 
Less imputed interest(44,279)
Total operating lease liabilities$203,127 
Cash payments included in the measurement of the Company’s operating lease liabilities were $31.1 million and $18.3 million for the years ended January 31, 2021 and January 31, 2020, respectively.
The Company recorded an impairment charge for operating lease right-of-use assets of $3.1 million and nil for the years ended January 31, 2021 and January 31, 2020, respectively.
v3.20.4
Commitments and Contingencies
 12 Months Ended
Jan. 31, 2021
Commitments and Contingencies Disclosure [Abstract]  
Commitments and Contingencies Commitments and Contingencies
Letters of Credit
In conjunction with the execution of certain office space operating leases, letters of credit in the aggregate amount of $11.2 million and $11.9 million were issued and outstanding as of January 31, 2021 and 2020, respectively. No draws have been made under such letters of credit.
Purchase Obligations
As of January 31, 2021, future minimum purchase obligations, such as data center operations and sales and marketing activities, were as follows (in thousands):
 Purchase Obligations
2022$53,992 
202338,370 
202432,844 
20251,604 
20261,417 
Total contractual obligations$128,227 
Legal Matters
From time to time in the normal course of business, the Company may be subject to various legal matters such as threatened or pending claims or proceedings. There were no such material matters as of January 31, 2021 and 2020.
Warranties and Indemnification
The Company’s subscription services are generally warranted to perform materially in accordance with the Company’s online help documentation under normal use and circumstances. Additionally, the Company’s arrangements generally include provisions for indemnifying customers against liabilities if its subscription services infringe a third party’s intellectual property rights. Furthermore, the Company may also incur liabilities if it breaches the security or confidentiality obligations in its arrangements. To date, the Company has not incurred significant costs and has not accrued a liability in the accompanying consolidated financial statements as a result of these obligations.
 The Company has entered into service-level agreements with a majority of its customers defining levels of uptime reliability and performance and permitting certain customers to receive credits for paid amounts related to subscription services when the Company fails to meet the defined levels of uptime. In very limited instances, the Company allows customers to early terminate their agreements in the event that the Company fails to meet those
levels as they may constitute a breach of contract. If the customer did terminate, they would receive a refund of prepaid unused subscription fees. To date, the Company has not experienced any significant failures to meet defined levels of uptime reliability and performance as a result of those agreements and, as a result, the Company has not accrued any liabilities related to these agreements in the consolidated financial statements.
v3.20.4
Common Stock and Stockholders' Equity
 12 Months Ended
Jan. 31, 2021
Equity [Abstract]  
Common Stock and Stockholders' Equity Common Stock and Stockholders' Equity
Common Stock
Holders of Class A and Class B common stock are entitled to one vote per share and 10 votes per share, respectively, and the shares of Class A common stock and Class B common stock are identical, except for voting and conversion rights. Shares of Class B common stock may be converted into Class A common stock at any time at the option of the stockholder on a one-for-one basis, and are automatically converted into Class A common stock upon sale or transfer, subject to certain limited exceptions. Shares of Class A common stock are not convertible.
In September 2019 and June 2020, in connection with the 2023 Notes Partial Repurchases, the Company issued approximately 3.0 million and 1.4 million shares of Class A common stock, respectively. In addition, during the year ended January 31, 2021, the Company issued approximately 0.2 million shares of Class A common stock in connection with 2023 Notes conversion requests and received approximately 0.2 million shares of Class A common stock from the settlement of Note Hedges. See Note 9 for additional details.
As of January 31, 2021, shares of common stock reserved for future issuance were as follows:
As of January 31, 2021
Options and unvested RSUs outstanding12,702,220 
Available for future stock option and RSU grants20,574,441 
Available for ESPP4,633,093 
 37,909,754 
Awards Issued as Charitable Contributions
During the years ended January 31, 2021, 2020 and 2019, the Company issued 42,500, 15,000 and 20,000 shares, respectively, of Class A common stock as charitable contributions and recognized $9.3 million, $1.7 million and $1.0 million, respectively, as general and administrative expense in the consolidated statements of operations.
v3.20.4
Employee Incentive Plans
 12 Months Ended
Jan. 31, 2021
Share-based Payment Arrangement [Abstract]  
Employee Incentive Plans Employee Incentive Plans
The Company’s equity incentive plans provide for granting stock options, RSUs and restricted stock awards to employees, consultants, officers and directors. In addition, the Company offers an ESPP to eligible employees.
Stock-based compensation expense by award type was as follows (in thousands):
 Year Ended January 31,
 202120202019
Stock options$21,371 $21,888 $23,466 
RSUs 164,412 94,637 41,637 
ESPP 10,373 9,408 7,248 
Restricted stock awards25 590 1,608 
Restricted common stock — 101 2,361 
Total $196,181 $126,624 $76,320 
Stock-based compensation expense was recorded in the following cost and expense categories in the Company’s consolidated statements of operations (in thousands):  
 Year Ended January 31,
 202120202019
Cost of revenue: 
Subscription$21,895 $12,923 $7,837 
Professional services and other8,083 7,164 4,983 
Research and development63,270 37,683 22,642 
Sales and marketing53,802 38,077 22,916 
General and administrative49,131 30,777 17,942 
Total$196,181 $126,624 $76,320 
Equity Incentive Plans
The Company has two equity incentive plans: the 2009 Stock Plan (2009 Plan) and the 2017 Equity Incentive Plan (2017 Plan). All shares that remain available for future grants are under the 2017 Plan. As of January 31, 2021, options to purchase 1,074,212 shares of Class A common stock and 7,175,901 shares of Class B common stock remained outstanding.
Stock Options
Options issued under the Plan generally are exercisable for periods not to exceed ten years and generally vest over four years with 25% vesting after one year and with the remainder vesting monthly thereafter in equal installments. Shares offered under the Plan may be: (i) authorized but unissued shares or (ii) treasury shares. 
A summary of the Company’s stock option activity and related information was as follows:  
 
Number of
Options 
Weighted-
Average
Exercise
Price 
Weighted-
Average
Remaining
Contractual
Term
(Years)
Aggregate
Intrinsic Value
(in thousands)
Outstanding as of January 31, 202012,359,302 $11.82 6.2$1,436,487 
Granted402,891 145.08 
Exercised (4,368,683)10.44 
Canceled (143,397)19.23 
Outstanding as of January 31, 20218,250,113 $18.93 5.6$1,980,668 
As of January 31, 2021
Vested and expected to vest8,250,113 $18.93 5.6$1,980,668 
Vested and exercisable 6,818,491 $9.93 5.2$1,698,330 
 
The weighted-average grant-date fair value of options granted was $63.32, $37.35 and $17.21 during the years ended January 31, 2021, 2020 and 2019, respectively. The total grant-date fair value of stock options vested was $19.7 million, $23.7 million and $23.8 million during the years ended January 31, 2021, 2020 and 2019, respectively. The intrinsic value of the options exercised, which represents the difference between the fair market value of the Company’s common stock on the date of exercise and the exercise price of each option, was $772.3 million, $558.6 million and $309.3 million for the years ended January 31, 2021, 2020 and 2019, respectively.
As of January 31, 2021 and January 31, 2020, there was a total of $31.1 million and $28.2 million, respectively, of unrecognized stock-based compensation expense related to options, which was being recognized over a weighted-average period of 1.4 years.
The Company used the Black-Scholes option pricing model to estimate the fair value of stock options granted with the following assumptions:  
 Year Ended January 31,
 202120202019
Expected volatility45 %43 %40 %
Expected term (in years)6.36.36.3
Risk-free interest rate
0.37% - 0.44%
1.55% - 2.27%
2.70 %
Expected dividend yield— — — 
Restricted Stock Units
A summary of the Company’s RSU activities and related information is as follows:
 Number of
RSUs		Weighted-
Average
Grant Date Fair Value Per Share
Outstanding as of January 31, 20204,893,241 $77.99 
Granted2,198,704 173.64 
Vested(2,195,094)80.28 
Forfeited(444,744)90.01 
Outstanding as of January 31, 20214,452,107 $122.90 
The Company granted 2,198,704 RSUs with an aggregate fair value of $381.8 million for the year ended January 31, 2021. As of January 31, 2021, there was $502.8 million of unrecognized stock-based compensation expense related to unvested RSUs, which is being recognized over a weighted-average period of 2.5 years based on vesting under the award service conditions. The total fair value of RSUs vested during fiscal 2021, 2020 and 2019 was $410.4 million, $193.9 million and $58.7 million, respectively.
Employee Stock Purchase Plan
The ESPP provides for 12-month offering periods beginning June 21 and December 21 of each year, and each offering period consists of up to two six-month purchase periods.
The Company estimated the fair value of ESPP purchase rights using a Black-Scholes option pricing model with the following assumptions:
Year Ended January 31,
202120202019
Expected volatility
48% - 54%
43% - 59%
39% - 70%
Expected term (in years)
0.5 - 1.0
0.5 - 1.0
0.5 - 1.0
Risk-free interest rate
0.09% - 0.18%
1.53% - 2.05%
2.12% - 2.62%
Expected dividend yield———
During the year ended January 31, 2021, the Company's employees purchased 247,142 shares of its Class A common stock under the ESPP. The shares were purchased at a weighted-average purchase price of $104.84, with proceeds of $25.9 million. During the year ended January 31, 2020, the Company's employees purchased 322,795 shares of its Class A common stock under the ESPP. The shares were purchased at a weighted-average purchase price of $58.14 with proceeds of $18.8 million.
As of January 31, 2021, there was $10.1 million of unrecognized stock-based compensation expense related to the ESPP that is expected to be recognized over an average vesting period of 0.9 years.
v3.20.4
Income Taxes
 12 Months Ended
Jan. 31, 2021
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
The domestic and foreign components of pre-tax loss for the years ended January 31, 2021, 2020 and 2019 were as follows (in thousands):  
 Year Ended January 31,
 202120202019
Domestic$(282,026)$(220,846)$(128,214)
Foreign15,835 10,514 2,700 
Loss before provision for (benefit from) income taxes$(266,191)$(210,332)$(125,514)

The components of the provision for (benefit from) income taxes for the years ended January 31, 2021, 2020 and 2019 were as follows (in thousands):  
 Year Ended January 31,
 202120202019
Current: 
Federal$11 $33 $— 
State136 86 61 
Foreign1,294 822 667 
Total current provision for income taxes1,441 941 728 
Deferred: 
Federal51 (518)(620)
State5 (406)(130)
Foreign(1,356)(1,436)5 
Total deferred benefit from income taxes(1,300)(2,360)(745)
Total provision for (benefit from) income taxes$141 $(1,419)$(17)
For the tax year ended January 31, 2021, the income tax expense from profitable jurisdictions was partially offset by the excess tax benefits from stock-based compensation in the United Kingdom. For the tax year ended January 31, 2020 the income tax benefit resulted from the release of valuation allowance in the United States in connection with an acquisition and excess tax benefits from stock-based compensation in the United Kingdom. For the tax year ended January 31, 2019, the income tax benefit resulted from the release of valuation allowance in the United States in connection with an acquisition and excess tax benefits from stock-based compensation in the United Kingdom. The income tax expense and benefits in the years ended January 31, 2021, 2020 and 2019 were partially offset by foreign income taxes, state taxes and tax amortization of goodwill.
 The following is a reconciliation of the statutory federal income tax rate to the Company’s effective tax rate for the years ended January 31, 2021, 2020 and 2019:  
 Year Ended January 31,
 202120202019
Tax at federal statutory rate21.0 %21.0 %21.0 %
State income taxes, net of federal benefit4.1 4.0 3.8 
Change in valuation allowance(101.0)(100.1)(68.5)
Stock-based compensation70.2 59.8 45.5 
Research and development credits6.4 18.0 — 
Other, net(0.8)(2.0)(1.8)
Effective tax rate(0.1)%0.7 %— %
The tax effects of temporary differences and related deferred tax assets and liabilities as of January 31, 2021 and 2020 were as follows (in thousands):
 As of January 31,
 20212020
Deferred tax assets: 
Net operating loss carryforwards$607,483 $370,705 
Stock-based compensation18,952 18,680 
Deferred revenue1,144 1,960 
Operating lease liabilities51,702 42,073 
Other reserves and accruals16,586 6,414 
Research and development and other credits57,060 39,918 
Disallowed interest6,091 4,507 
Total deferred tax assets759,018 484,257 
Valuation allowance(555,199)(361,606)
Total deferred tax assets, net203,819 122,651 
Deferred tax liabilities:
Convertible debt(112,547)(50,963)
Deferred commissions(38,710)(27,569)
Capitalized internal-use software costs(2,691)(2,248)
Goodwill(306)(262)
Operating lease right-of-use assets(37,522)(31,165)
Depreciation and amortization(8,522)(8,315)
Total deferred tax liabilities(200,298)(120,522)
Net deferred tax assets$3,521 $2,129 

As a result of continuing losses, the Company has determined that it is not more likely than not that it will realize the benefits of the U.S. deferred tax assets and, therefore, the Company has recorded a valuation allowance to reduce the carrying value of the U.S. deferred tax assets, net of U.S. deferred tax liabilities, to approximately zero. The U.S. valuation allowance increased by $193.6 million and $157.7 million during the years ended January 31, 2021 and 2020, respectively.
As of January 31, 2021, the Company had approximately $2,390.3 million of federal and $1,541.9 million of state net operating loss carryforwards available to offset future taxable income. If not used, the federal and state net operating loss carryforwards will begin to expire in 2029 and 2022, respectively. As of January 31, 2021, the Company had approximately $49.4 million of UK net operating losses which do not expire.
As of January 31, 2021, the Company had federal research and development tax credit carryforwards of $50.3 million and California research and development tax credit carryforwards of $33.4 million. The federal research and development credits will start to expire in 2030 while the California research and development credits do not expire. The Company also had California Enterprise Zone credits of $1.0 million that begin to expire in 2023.
The Company’s ability to use the net operating loss and tax credit carryforwards in the future may be subject to substantial restrictions in the event of past or future ownership changes as defined in Section 382 of the Internal Revenue Code and similar state tax laws.
The Company attributes net revenue, costs and expenses to domestic and foreign components based on the terms of its agreements with its subsidiaries. The Company does not provide for federal income taxes on the undistributed earnings of its foreign subsidiaries as such earnings are to be reinvested offshore indefinitely. If the Company repatriated these earnings, the resulting income tax liability would be insignificant. The Company is subject to taxation in the United States and various states and foreign jurisdictions.
On March 27, 2020, the President signed into law the Coronavirus Aid, Relief, and Economic Security Act (the CARES Act). The CARES Act provides numerous tax provisions and other stimulus measures, including temporary changes regarding the prior and future use of net operating losses, temporary changes to the prior and future
limitations on interest deductions, temporary suspension of certain payment requirements for the employer portion of Social Security taxes, technical corrections from prior tax legislation for tax depreciation of certain qualified improvement property, and the creation of certain refundable employee retention credits. The Company does not expect there to be a material tax impact on its consolidated financial statements at this time, and will continue to assess the implications of the CARES Act and its continuing developments and interpretations.
A reconciliation of beginning and ending amount of unrecognized tax benefit was as follows (in thousands):  
 Year Ended January 31,
 202120202019
Gross amount of unrecognized tax benefits as of the beginning of the year$15,987 $23,931 $11,719 
Additions based on tax positions related to a prior year— 658 1,859 
Additions based on tax positions related to current year7,189 6,866 10,353 
Reductions based on tax positions taken in a prior year (952)(15,468)— 
Gross amount of unrecognized tax benefits as of the end of the year$22,224 $15,987 $23,931 
The Company is subject to taxation in the U.S. and various other state and foreign jurisdictions. As the Company has net operating loss carryforwards for U.S. federal and state jurisdictions, the statute of limitations is open for all years. For material foreign jurisdictions, the tax years open to examination include the tax years 2016 and forward.
As of January 31, 2021, 2020 and 2019, the Company had unrecognized tax benefits which would not impact the effective tax rate because of the valuation allowance. The Company's policy is to include interest and penalties related to unrecognized tax benefits within the provision for income taxes. The Company did not have any uncertain tax positions as of January 31, 2021 for which it was reasonably possible that the positions will increase or decrease within the next twelve months. As of January 31, 2021 and 2020, the Company had not accrued any interest or penalties related to unrecognized tax benefits.
v3.20.4
Net Loss Per Share
 12 Months Ended
Jan. 31, 2021
Earnings Per Share [Abstract]  
Net Loss Per Share Net Loss Per Share
The Company computes net loss per share of common stock in conformity with the two-class method required for participating securities.
The following table presents the calculation of basic and diluted net loss per share (in thousands, except per share data):  
Year Ended January 31,
 202120202019
Class AClass BClass AClass B
Class A
Class B
Numerator:  
Net loss$(248,892)$(17,440)$(192,138)$(16,775)$(107,926)$(17,571)
Denominator:  
Weighted-average shares outstanding, basic and diluted118,882 8,330 107,809 9,412 92,452 15,052 
Net loss per share, basic and diluted$(2.09)$(2.09)$(1.78)$(1.78)$(1.17)$(1.17)
As the Company was in a loss position for all periods presented, basic net loss per share is the same as diluted net loss per share as the inclusion of all potential common shares outstanding would have been anti-dilutive. Potentially dilutive securities that were not included in the diluted per share calculations because they would be anti-dilutive were as follows (in thousands):
 
Year Ended January 31,
 202120202019
Issued and outstanding stock options8,250 12,359 17,804 
Unvested RSUs issued and outstanding4,452 4,893 4,836 
Unvested restricted stock awards issued and outstanding— 177 388 
Unvested shares subject to repurchase— 5 48 
Unvested restricted common stock issued and outstanding— — 400 
Shares committed under the ESPP137 253 271 
Shares related to 2023 Notes832 2,494 7,134 
Shares subject to warrants related to the issuance of 2023 Notes1,048 2,494 — 
Shares related to 2025 Notes5,617 5,617 — 
Shares related to 2026 Notes4,820 — — 
 25,156 28,292 30,881 
The Company uses the if-converted method for calculating any potential dilutive effect of the conversion options embedded in the Notes on diluted net income per share, if applicable. The conversion options of the 2023, 2025 and 2026 Notes are dilutive in periods of net income on a weighted-average basis using an assumed conversion date equal to the later of the beginning of the reporting period and the date of issuance of the respective Notes. The exercise rights of the Warrants will have a dilutive impact on net income per share of common stock under the treasury-stock method when the average market price per share of the Company’s Class A common stock for a given period exceeds the conversion price of $68.06 per share. During the year ended January 31, 2021, the average price per share of the Company’s Class A common stock exceeded the exercise price of the Warrants; however, since the Company is in a net loss position there was no dilutive effect during any period presented.
v3.20.4
Subsequent Events
 12 Months Ended
Jan. 31, 2021
Subsequent Events [Abstract]  
Subsequent Events Subsequent Events
On March 3, 2021, the Company entered into a definitive agreement to acquire Auth0, an identity management platform, pursuant to the Merger Agreement.
Upon consummation of the transaction contemplated by the Merger Agreement, all outstanding shares of Auth0 capital stock, options, warrants, convertible securities, phantom equity and other outstanding equity interests will be cancelled in exchange for aggregate consideration of $6.5 billion in the form of shares of Class A common stock of the Company and assumed awards of corresponding Company equity interests, subject to customary purchase price adjustments and certain customary cash payouts in lieu of shares of Company Class A common stock, as provided by the Merger Agreement. The purchase price payable in shares of Class A common stock will be valued at $276.2147 per share (which price was calculated based on the daily volume-weighted average sales price per share of Company Class A common stock for the 20 trading days ending on February 26, 2021). The per share price of these shares has been fixed as of the Merger Agreement signing date, and the aggregate value of these shares will fluctuate based on changes in our share price between the signing and closing dates.
The proposed transaction is expected to close during the Company’s second quarter of fiscal 2022, the quarter ending July 31, 2021. The closing of this transaction is subject to certain customary closing conditions and approvals.
v3.20.4
Summary of Significant Accounting Policies (Policies)
 12 Months Ended
Jan. 31, 2021
Accounting Policies [Abstract]  
Basis of Presentation The accompanying consolidated financial statements, which include the accounts of the Company and its wholly owned subsidiaries, have been prepared in conformity with accounting principles generally accepted in the United States of America (GAAP).
Principles of Consolidation All intercompany balances and transactions have been eliminated in consolidation.
Fiscal Period The Company’s fiscal year ends on January 31. References to fiscal 2021, for example, refer to the fiscal year ended January 31, 2021.
Use of Estimates
The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates, judgments and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. The Company bases its estimates on historical experience and on other assumptions that its management believes are reasonable under the circumstances. Actual results could vary from those estimates. The Company’s most significant estimates include the SSP for each distinct performance obligation included in customer contracts with multiple performance obligations, the determination of the period of benefit for deferred commissions, the determination of the effective interest rate of the liability components of its convertible senior notes, the determination of the incremental borrowing rate used for operating lease liabilities, the valuation of deferred income tax assets and the valuation of acquired intangible assets.
In March 2020, the World Health Organization (WHO) declared the outbreak of the novel coronavirus, COVID-19, a pandemic, which continues to spread across the globe. The Company considered the impact of COVID-19 on the assumptions and estimates used and determined that there were no material adverse impacts on the consolidated financial statements for the year ended January 31, 2021. As events continue to evolve and additional information becomes available, our assumptions and estimates may change materially in future periods.
Foreign Currency The functional currencies of the Company’s foreign subsidiaries are the respective local currencies. Translation adjustments arising from the use of differing exchange rates from period to period are included in accumulated other comprehensive loss within the consolidated statements of redeemable convertible preferred stock and stockholders’ equity (deficit). Foreign currency transaction gains and losses are included in other expense, net in the consolidated statements of operations and were not material for the years ended January 31, 2021, 2020 or 2019. All assets and liabilities denominated in a foreign currency are translated into U.S. dollars at the exchange rate on the balance sheet date. Revenue and expenses are translated at the average exchange rate during the period, and equity balances are translated using historical exchange rates.
Segment Information The Company operates in a single operating segment. The Company’s chief operating decision maker is its chief executive officer, who reviews financial information presented on a consolidated basis for purposes of making operating decisions, assessing financial performance and allocating resources.
Revenue Recognition, Deferred Revenue and Cost of Revenue
The Company derives revenue from subscription fees (which include support fees) and professional services fees. The Company sells subscriptions to its platform through arrangements that are generally one to five years in length. The Company’s arrangements are generally non-cancellable and non-refundable. Furthermore, if a customer reduces the contracted usage or service level, the customer has no right of refund. The Company’s subscription arrangements do not provide customers with the right to take possession of the software supporting the platform and, as a result, are accounted for as service arrangements. This revenue recognition policy is consistent for sales generated directly with customers and sales generated indirectly through channel partners.
The Company determines revenue recognition through the following steps:
•Identification of the contract, or contracts, with a customer;
•Identification of the performance obligations in the contract;
•Determination of the transaction price;
•Allocation of the transaction price to the performance obligations in the contract; and
•Recognition of revenue when, or as, the Company satisfies a performance obligation.
Subscription Revenue
Subscription revenue, which includes support, is recognized on a straight-line basis over the non-cancellable contractual term of the arrangement, generally beginning on the date that the Company’s service is made available to the customer.
Professional Services Revenue
The Company’s professional services principally consist of customer-specific requests for application integrations, user interface enhancements and other customer-specific requests. Revenue for the Company’s professional services is recognized as services are performed in proportion to their pattern of transfer.
Contracts with Multiple Performance Obligations
Some of the Company’s contracts with customers contain multiple performance obligations. For these contracts, the Company accounts for individual performance obligations separately if they are distinct. The transaction price is allocated to the separate performance obligations on a relative SSP basis. The Company determines SSP based on observable, if available, prices for those related services when sold separately. When such observable prices are not available, the Company determines SSP based on overarching pricing objectives and strategies, taking into consideration market conditions and other factors, including customer size, volume purchased, market and industry conditions, product-specific factors and historical sales of the deliverables.
Deferred revenue consists primarily of payments received and accounts receivable recorded in advance of revenue recognition under the Company’s subscription and support services and professional services arrangements. The Company primarily invoices its customers for its subscription services arrangements annually in advance. The Company’s payment terms generally provide that customers pay the invoiced portion of the total arrangement fee within 30 days of the invoice date. Amounts anticipated to be recognized within one year of the balance sheet date are recorded as deferred revenue, current; the remaining portion is recorded as deferred revenue, noncurrent in the consolidated balance sheets.Costs of revenue primarily consist of costs related to providing the Company’s cloud-based platform to its customers, including third-party hosting fees, amortization of capitalized internal-use software and finite-lived purchased developed technology, customer support, other employee-related expenses for security, technical operations and professional services staff, and allocated overhead costs.
Deferred Commissions Sales commissions earned by the Company’s sales force are considered incremental and recoverable costs of obtaining a contract with a customer. Sales commissions for new revenue contracts, including incremental sales to existing customers, are deferred and then amortized on a straight-line basis over a period of benefit, which the Company has determined to be generally five years. The Company determined the period of benefit by taking into consideration the terms of its customer contracts, its technology and other factors. Sales commissions for renewal contracts (which are not considered commensurate with sales commissions for new revenue contracts and incremental sales to existing customers) are deferred and then amortized on a straight-line basis over the related period of benefit, which is generally the related contract renewal term. Amortization expense is included in sales and marketing expenses in the accompanying consolidated statements of operations.
Cash and Cash Equivalents Cash and cash equivalents consist of cash on hand and highly liquid investments with original maturities of three months or less from the date of purchase. Cash equivalents generally consist of investments in money market funds. The fair market value of cash equivalents approximated their carrying value as of January 31, 2021 and 2020.
Short-Term Investments
The Company’s short-term investments comprise U.S. treasury securities and corporate debt securities. The Company determines the appropriate classification of its short-term investments at the time of purchase and reevaluates such designation at each balance sheet date. The Company has classified and accounted for its short-term investments as available-for-sale securities as the Company may sell these securities at any time for use in its current operations or for other purposes, even prior to maturity. As a result, short-term investments, including securities with stated maturities beyond twelve months, are classified within current assets in the consolidated balance sheets.
Available-for-sale securities are recorded at fair value each reporting period and are periodically evaluated for unrealized losses. For unrealized losses in securities that the Company intends to hold and will not more likely than not be required to sell before recovery, the Company further evaluates whether declines in fair value below amortized cost are due to credit or non-credit related factors.
The Company considers credit related impairments to be changes in value that are driven by a change in the creditor’s ability to meet its payment obligations, and records an allowance and recognizes a corresponding loss in interest income and other, net when the impairment is incurred. Unrealized non-credit related losses and unrealized gains are reported as a separate component of accumulated other comprehensive loss in the consolidated balance sheets until realized. Realized gains and losses are determined based on the specific identification method and are reported in interest income and other, net in the consolidated statements of operations.
Accounts Receivable and Allowances Accounts receivable are recorded at the invoiced amount, net of allowances. These allowances are based on the Company’s assessment of the collectibility of accounts by considering the age of each outstanding invoice, the collection history of each customer, and an evaluation of current expected risk of credit loss based on current economic conditions and reasonable and supportable forecasts of future economic conditions over the life of the receivable. We assess collectibility by reviewing accounts receivable on an aggregated basis where similar characteristics exist and on an individual basis when we identify specific customers with collectibility issues. Amounts deemed uncollectible are recorded as an allowance in the consolidated balance sheets with an offsetting decrease in deferred revenue or a charge to general and administrative expense in the consolidated statements of operations.
Property and Equipment
Property and equipment, net, is stated at cost less accumulated depreciation. Depreciation is recorded using the straight-line method over the estimated useful lives of the respective assets. Repairs and maintenance costs are expensed as incurred.
  The useful lives of property and equipment are as follows:
Useful lives
Capitalized internal-use software costs3 years
Computers and equipment3 years
Furniture and fixtures7 years
Leasehold improvementsShorter of estimated useful life or remaining lease term
Business Combinations When the Company acquires a business, the purchase price is allocated to the net tangible and identifiable intangible assets acquired based on their estimated fair values. Any residual purchase price is recorded as goodwill. The allocation of the purchase price requires management to make significant estimates in determining the fair values of assets acquired and liabilities assumed, especially with respect to intangible assets. These estimates can include, but are not limited to, the cash flows that an asset is expected to generate in the future, the appropriate weighted-average cost of capital and the cost savings expected to be derived from acquiring an asset. These estimates are inherently uncertain and unpredictable. During the measurement period, which may be up to one year from the acquisition date, adjustments to the fair value of these tangible and intangible assets acquired and liabilities assumed may be recorded, with the corresponding offset to goodwill. Upon the conclusion of the measurement period or final determination of the fair value of assets acquired or liabilities assumed, whichever comes first, any subsequent adjustments are recorded to the consolidated statements of operations.
Goodwill and Other Long-Lived Assets
The excess of the purchase price over the estimated fair value of net assets of businesses acquired in a business combination is recognized as goodwill. Goodwill is tested for impairment annually on November 1st or more frequently if certain indicators are present.
Long-lived assets, such as property and equipment and finite-lived intangible assets subject to amortization are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of any asset may not be recoverable. Recoverability of assets to be held and used is measured by comparing the carrying amount to the estimated undiscounted future cash flows expected to be generated. If the carrying amount exceeds the undiscounted cash flows, the assets are determined to be impaired and an impairment charge is recognized as the amount by which the carrying amount exceeds its fair value.
The Company amortizes intangible assets with finite lives on a straight-line basis over their estimated useful lives in cost of revenue in the consolidated statements of operations.
Operating Leases and Incremental Borrowing Rate
The Company leases office space under operating leases with expiration dates through 2028. The Company determines whether an arrangement constitutes a lease and records lease liabilities and right-of-use assets on its consolidated balance sheets at lease commencement. Lease liabilities are measured based on the present value of the total lease payments not yet paid discounted based on the more readily determinable of either the rate implicit in the lease or the Company’s incremental borrowing rate, which is the estimated rate the Company would be required to pay for a collateralized borrowing equal to the total lease payments over the term of the lease. Lease liabilities due within twelve months are included within accrued expenses and other current liabilities on the Company's consolidated balance sheet. The estimation of the incremental borrowing rate is based on an estimate of the Company's unsecured borrowing rate for its Notes, adjusted for tenor and collateralized security features. Right-of-use assets are measured based on the corresponding lease liability adjusted for (i) payments made to the lessor at or before the commencement date, (ii) initial direct costs incurred and (iii) tenant incentives received, incurred or payable under the lease. Recognition of rent expense begins when the lessor makes the underlying asset available to the Company. The Company does not assume renewals or early terminations of its leases unless it is reasonably certain to exercise these options at commencement and does not allocate consideration between lease and non-lease components.
For short-term leases, the Company records rent expense in its consolidated statements of operations on a straight-line basis over the lease term and records variable lease payments as incurred.
Convertible Senior Notes
The Company accounts for the issuance of convertible senior notes in accordance with FASB ASC Subtopic 470-20, Debt with Conversion and Other Options. Pursuant to ASC Subtopic 470-20, as the Notes have a net settlement feature and may be settled wholly or partially in cash upon conversion, the Company is required to separately account for the liability (debt) and equity (conversion option) components of the instrument. The carrying amount of the liability component is computed by estimating the fair value of a similar liability without the conversion option using income and market based approaches. For the income-based approach, the Company uses a convertible bond pricing model that includes several assumptions such as volatility, the risk-free rate, and observable trading activity for the Company's existing Notes. For the market-based approach, the Company observes the price of derivative instruments purchased in conjunction with our convertible senior note issuances or the Company evaluates issuances of convertible debt securities by other companies with similar credit risk ratings at the time of issuance. The amount of the equity component is then calculated by deducting the fair value of the liability component from the principal amount of the instrument. This difference represents a debt discount that is amortized to interest expense over the respective terms of the Notes using an effective interest rate method. The equity component is not remeasured as long as it continues to meet the conditions for equity classification. In accounting for the issuance costs related to the Notes, the allocation of issuance costs incurred between the liability and equity components were based on their relative values.
Similarly, in accordance with ASC Subtopic 470-20, transactions involving contemporaneous exchanges of cash between the same debtor and creditor in connection with the issuance of a new debt obligation and satisfaction of an existing debt obligation by the debtor should be evaluated as a modification or an exchange transaction depending on whether the exchange is determined to have substantially different terms. When the exchange is deemed to have substantially different terms due to a significant difference between the value of the conversion option immediately prior to and after the exchange, the transaction is accounted for as a debt extinguishment. Pursuant to ASC Subtopic 470-20, total consideration for the satisfaction of an existing debt obligation is separated into liability and equity components by estimating the fair value of a similar liability without a conversion option and assigning the residual value to the equity component. The effective interest rate used to estimate the fair value of the liability component is based on the income and market based approaches used to determine the effective interest rate of the new debt obligation, adjusted for the remaining tenor of the extinguished debt. The difference between the fair value and the amortized carrying value of the extinguished debt, net of the proportionate amounts of unamortized debt discount and remaining unamortized debt issuance costs, is recorded as a gain or loss on extinguishment.
Advertising Expenses Advertising costs are expensed as incurred.
Income Taxes
The Company accounts for income taxes in accordance with the liability method of accounting for income taxes. Under this method, the Company recognizes deferred tax assets and liabilities for the expected future tax consequences of temporary differences between the financial reporting and tax basis of assets and liabilities, as well as for operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates that are expected to apply to taxable income for the years in which those tax assets and liabilities are expected to be realized or settled.
The Company records a valuation allowance to reduce its deferred tax assets to the net amount that the Company believes is more likely than not to be realized. In assessing the need for a valuation allowance, the Company has considered its historical levels of income, expectations of future taxable income and ongoing tax planning strategies. Because of the uncertainty of the realization of the deferred tax assets, the Company has recorded a full valuation allowance against its deferred tax assets. Realization of its deferred tax assets is dependent primarily upon future U.S. taxable income.
The Company recognizes and measures tax benefits from uncertain tax positions using a two-step approach.
The first step is to evaluate the tax position taken or expected to be taken by determining if the weight of available evidence indicates that it is more likely than not that the tax position will be sustained in an audit, including resolution of any related appeals or litigation processes. The second step is to measure the tax benefit as the largest amount that is more than 50% likely to be realized upon ultimate settlement. Significant judgment is required to evaluate uncertain tax positions.
Although the Company believes that it has adequately reserved for its uncertain tax positions, it can provide no assurance that the final tax outcome of these matters will not be materially different. The Company evaluates its uncertain tax position on a regular basis and evaluations are based on a number of factors, including changes in facts and circumstances, changes in tax law, correspondence with tax authorities during the course of an audit and effective settlement of audit issues.
To the extent that the final tax outcome of these matters is different than the amounts recorded, such differences will affect the provision for income taxes in the period in which such determination is made and could have a material impact on the Company’s financial condition and results of operations. The provision for income taxes includes the effects of any accruals that the Company believes are appropriate, as well as the related net interest and penalties.
Concentrations of Risk and Significant Customers
The Company’s financial instruments that are exposed to concentrations of credit risk consist primarily of cash and cash equivalents, short-term investments and accounts receivable. Cash and cash equivalents and short-term investments are currently held in three financial institutions and, at times, may exceed federally insured limits.
As of January 31, 2021 and 2020 and for each of the three years ended January 31, 2021, no single customer represented greater than 10% of accounts receivable or greater than 10% of revenue, respectively.
In order to reduce the risk of downtime of the Company’s subscription services, the Company uses data center facilities operated by a third-party located in Virginia, Oregon, Ohio, Germany, Ireland, Singapore and Sydney. The Company has internal procedures to restore services in the event of disaster at any of its current data center facilities. Even with these procedures for disaster recovery in place, the Company’s subscription services could be significantly interrupted during the time period following a disaster at one of its sites and the subsequent restoration of services at another site.Other than the United States, no individual country exceeded 10% of total revenue for the years ended January 31, 2021, 2020 and 2019. Property and equipment by geographic location is based on the location of the legal entity that owns the asset. As of January 31, 2021 and 2020, substantially all of the Company’s property and equipment was located in the United States.
Net Loss per Share The Company computes basic and diluted net loss per share attributable to common stockholders in conformity with the two-class method required for participating securities. Under the two-class method, basic net loss per share attributable to common stockholders is calculated by dividing the net loss attributable to common stockholders by the weighted-average number of shares of common stock outstanding during the period, less shares subject to repurchase, without consideration for potentially dilutive securities as they do not share in losses. The diluted net loss per share attributable to common stockholders is computed giving effect to all potential dilutive common stock equivalents outstanding for the period. For purposes of this calculation, options to purchase common stock, unvested restricted stock units (RSUs) purchase rights issued under the 2017 Employee Stock Purchase Plan shares subject to repurchase from early exercised options, unvested common stock and restricted stock issued in connection with certain business combinations, convertible senior notes and warrants are considered common stock equivalents but have been excluded from the calculation of diluted net loss per share attributable to common stockholders as their effect is antidilutive. Since the Company's IPO, Class A and Class B common stock are the only outstanding equity of the Company. The rights of the holders of Class A and Class B common stock are identical, except with respect to voting and conversion rights. See Note 15.
Recently Adopted and Not Yet Adopted Accounting Pronouncements
In June 2016, the FASB issued Accounting Standards Update (ASU) 2016-13, which changes the existing incurred loss impairment model for financial assets held at amortized cost. The new model uses a forward-looking expected loss method to calculate credit loss estimates. ASU 2016-13 also eliminates the concept of other-than-temporary impairment and requires credit losses related to available-for-sale debt securities to be recorded through an allowance for credit losses rather than as a reduction in the amortized cost basis of the securities. These changes will result in earlier recognition of credit losses. The Company adopted the requirements of ASU 2016-13 as of February 1, 2020 on a modified retrospective basis. The adoption of this standard did not have a material impact on the Company’s consolidated financial statements.
In August 2018, the FASB issued ASU No. 2018-15, Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract (ASU 2018-15), which requires a customer in a cloud computing arrangement that is a service contract to follow the internal-use software guidance in Accounting Standards Codification 350-40 to determine which implementation costs to defer and recognize as an asset. The Company adopted the requirements of ASU 2018-15 as of February 1, 2020 on a prospective basis. The adoption of this standard did not have a material impact on the Company’s consolidated financial statements.
In December 2019, the FASB issued ASU No. 2019-12, Simplifying the Accounting for Income Taxes (ASU 2019-12), as part of its Simplification Initiative to reduce the cost and complexity in accounting for income taxes. ASU 2019-12 removes certain exceptions related to the approach for intraperiod tax allocation and clarifies the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences. The guidance is effective for interim and annual periods beginning after December 15, 2020, with early adoption permitted. The Company early adopted ASU 2019-12 as of February 1, 2020 on a
prospective basis. The adoption of this standard did not have a material impact on the Company’s consolidated financial statements.
Recently Issued Accounting Pronouncements Not Yet Adopted
In August 2020, the FASB issued ASU No. 2020-06, Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity (ASU 2020-06), which simplifies the accounting for certain financial instruments with characteristics of liabilities and equity, including convertible instruments and contracts in an entity’s own equity. Among other changes, ASU 2020-06 removes from GAAP the liability and equity separation model for convertible instruments with a cash conversion feature, and as a result, after adoption, entities will no longer separately present in equity an embedded conversion feature for such debt. Similarly, the embedded conversion feature will no longer be amortized into income as interest expense over the life of the instrument. Instead, entities will account for a convertible debt instrument wholly as debt unless (1) a convertible instrument contains features that require bifurcation as a derivative under ASC Topic 815, Derivatives and Hedging, or (2) a convertible debt instrument was issued at a substantial premium. Among other potential impacts, this change is expected to reduce reported interest expense, increase reported net income, and result in a reclassification of certain conversion feature-related balance sheet amounts from stockholders’ equity to liabilities as it relates to the Company’s convertible senior notes. Additionally, ASU 2020-06 requires the application of the if-converted method to calculate the impact of convertible instruments on diluted earnings per share (EPS), which is consistent with the Company’s accounting treatment under the current standard. ASU 2020-06 is effective for fiscal years beginning after December 15, 2021, with early adoption permitted for fiscal years beginning after December 15, 2020, and can be adopted on either a fully retrospective or modified retrospective basis. The Company is currently evaluating the timing, method of adoption and overall impact of this standard on its consolidated financial statements.
Fair Value Measurement
The Company measures its financial assets at fair value each reporting period using a fair value hierarchy that prioritizes the use of observable inputs and minimizes the use of unobservable inputs when measuring fair value. A financial instrument’s classification within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement.
 Three levels of inputs may be used to measure as follows:
Level 1—Valuations based on observable inputs that reflect quoted prices for identical assets or liabilities in
active markets.
Level 2—Valuations based on other inputs that are directly or indirectly observable in the marketplace.
Level 3—Valuations based on unobservable inputs that are supported by little or no market activity.
v3.20.4
Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Jan. 31, 2021
Accounting Policies [Abstract]  
Schedule of Property Plant and Equipment Estimated Useful Life The useful lives of property and equipment are as follows:
Useful lives
Capitalized internal-use software costs3 years
Computers and equipment3 years
Furniture and fixtures7 years
Leasehold improvementsShorter of estimated useful life or remaining lease term
Property and equipment consisted of the following (in thousands):  
 As of January 31,
 20212020
Computers and equipment$1,242 $3,567 
Furniture and fixtures13,948 11,014 
Leasehold improvements69,862 55,363 
Property and equipment, gross85,052 69,944 
Less accumulated depreciation(22,269)(16,409)
Property and equipment, net$62,783 $53,535 
Schedule of Revenue by Geographic Area The following table sets forth revenue by geographic area (in thousands): 
 Year Ended January 31,
 202120202019
United States$701,635 $494,529 $337,367 
International133,789 91,538 61,887 
Total$835,424 $586,067 $399,254 
v3.20.4
Cash Equivalents and Short-term Investments (Tables)
 12 Months Ended
Jan. 31, 2021
Investments, Debt and Equity Securities [Abstract]  
Schedule of Amortized Costs, Unrealized Gains and Losses and Estimated Fair Value of Cash Equivalents and Short-term Investments
The amortized cost, unrealized gain (loss) and estimated fair value of the Company’s cash equivalents and short-term investments as of January 31, 2021 and 2020 were as follows (in thousands):  
 As of January 31, 2021
 
Amortized
Cost
Unrealized
Gain
Unrealized
Loss
Estimated
Fair Value 
Cash equivalents:    
Money market funds$311,257 $— $— $311,257 
Total cash equivalents311,257 — — 311,257 
Short-term investments:    
U.S. treasury securities1,888,882 1,571 (22)1,890,431 
Corporate debt securities230,726 429 (2)231,153 
Total short-term investments2,119,608 2,000 (24)2,121,584 
Total$2,430,865 $2,000 $(24)$2,432,841 
 As of January 31, 2020
 
Amortized
Cost
Unrealized
Gain
Unrealized
Loss
Estimated
Fair Value 
Cash equivalents:    
Money market funds$416,584 $— $— $416,584 
U.S. treasury securities19,996 — — 19,996 
Total cash equivalents436,580 — — 436,580 
Short-term investments:   
U.S. treasury securities575,920 686 (8)576,598 
Corporate debt securities305,859 519 — 306,378 
Total short-term investments881,779 1,205 (8)882,976 
Total$1,318,359 $1,205 $(8)$1,319,556 
Schedule of Contractual Maturities of Short-term Investments
The following table presents the contractual maturities of the Company's short-term investments as of January 31, 2021 and 2020 (in thousands):
 As of January 31, 2021
 
Amortized
Cost
Estimated
Fair Value
Due within one year$1,509,241 $1,510,810 
Due between one to five years610,367 610,774 
Total$2,119,608 $2,121,584 
v3.20.4
Fair Value Measurements (Tables)
 12 Months Ended
Jan. 31, 2021
Fair Value Disclosures [Abstract]  
Schedule of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis
The following table presents information about the Company’s financial assets that were measured at fair value on a recurring basis using the above input categories (in thousands):   
 As of January 31, 2021
 Level 1
Level 2 
Level 3Total
Assets:    
Cash equivalents:    
Money market funds$311,257 $— $— $311,257 
Total cash equivalents311,257 — — 311,257 
Short-term investments:    
U.S. treasury securities— 1,890,431 — 1,890,431 
Corporate debt securities— 231,153 — 231,153 
Total short-term investments— 2,121,584 — 2,121,584 
Total cash equivalents and short-term investments$311,257 $2,121,584 $— $2,432,841 
 As of January 31, 2020
 Level 1
Level 2 
Level 3Total
Assets:    
Cash equivalents:    
Money market funds$416,584 $— $— $416,584 
U.S. treasury securities— 19,996 — 19,996 
Total cash equivalents416,584 19,996 — 436,580 
Short-term investments:    
U.S. treasury securities— 576,598 — $576,598 
Corporate debt securities— 306,378 — 306,378 
Total short-term investments— 882,976 — 882,976 
Total cash equivalents and short-term investments$416,584 $902,972 $— $1,319,556 
Schedule of Carrying Amounts and Estimated Fair Values of Convertible Note The following table presents the carrying amounts and estimated fair values of our financial instruments that are not recorded at fair value on the consolidated balance sheets (in thousands):
As of January 31, 2021
Net Carrying Amount(1)
Estimated
Fair Value 
2023 convertible senior notes$36,092 $216,926 
2025 convertible senior notes$885,465 $1,605,508 
2026 convertible senior notes$867,643 $1,493,850 
(1)    Before unamortized debt issuance costs.
v3.20.4
Goodwill and Intangible Assets, net (Tables)
 12 Months Ended
Jan. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Intangible Assets, net
Intangible assets consisted of the following (in thousands):  
 As of January 31, 2021
GrossAccumulated AmortizationWrite-offsNet
Capitalized internal-use software costs$30,259 $(19,478)$— $10,781 
Purchased developed technology28,800 (12,694)— 16,106 
Software licenses126 (4)— 122 
 $59,185 $(32,176)$— $27,009 
 As of January 31, 2020
GrossAccumulated AmortizationWrite-offsNet
Capitalized internal-use software costs$24,890 $(14,828)$(119)$9,943 
Purchased developed technology28,800 (6,321)— 22,479 
Software licenses1,112 (1,005)— 107 
 $54,802 $(22,154)$(119)$32,529 
Schedule of Estimated Remaining Amortization Expense for Intangible Assets
As of January 31, 2021, estimated remaining amortization expense for the intangible assets by fiscal year was as follows (in thousands):
Remaining Amortization
2022$10,354 
20238,416 
20247,354 
2025885 
Total$27,009 
v3.20.4
Balance Sheet Components (Tables)
 12 Months Ended
Jan. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Property and Equipment, net The useful lives of property and equipment are as follows:
Useful lives
Capitalized internal-use software costs3 years
Computers and equipment3 years
Furniture and fixtures7 years
Leasehold improvementsShorter of estimated useful life or remaining lease term
Property and equipment consisted of the following (in thousands):  
 As of January 31,
 20212020
Computers and equipment$1,242 $3,567 
Furniture and fixtures13,948 11,014 
Leasehold improvements69,862 55,363 
Property and equipment, gross85,052 69,944 
Less accumulated depreciation(22,269)(16,409)
Property and equipment, net$62,783 $53,535 
Schedule of Allowances
The Company’s accounts receivable allowances for the years ended January 31, 2021, 2020 and 2019 were as follows (in thousands):  
 As of January 31,
 202120202019
Balance, beginning of period$1,166 $2,098 $1,472 
Additions (reductions)3,252 (673)888 
Write-offs(967)(259)(262)
Balance, end of period$3,451 $1,166 $2,098 
Schedule of Accrued Expenses and Other Current Liabilities
Accrued expenses and other current liabilities consisted of the following (in thousands):  
 As of January 31,
 20212020
Accrued expenses$24,717 $22,530 
Accrued taxes payable2,462 1,591 
Operating lease liabilities23,403 12,064 
Other3,147 702 
Accrued expenses and other current liabilities$53,729 $36,887 
Schedule of Other Liabilities, noncurrent
Other liabilities, noncurrent consisted of the following (in thousands):  
 As of January 31,
 20212020
Deferred tax liabilities$3,877 $1,558 
Other7,498 3,803 
Other liabilities, noncurrent$11,375 $5,361 
v3.20.4
Convertible Senior Notes, Net (Tables)
 12 Months Ended
Jan. 31, 2021
Debt Disclosure [Abstract]  
Schedule of Interest Expense The following table sets forth total interest expense recognized related to the 2023 Notes (in thousands):
Year Ended January 31,
20212020
Contractual interest expense$180 $606 
Amortization of debt issuance costs312 985 
Amortization of debt discount3,316 11,219 
Total$3,808 $12,810 
The following table sets forth total interest expense recognized related to the 2025 Notes (in thousands):
Year Ended January 31,
20212020
Contractual interest expense$1,325 $519 
Amortization of debt issuance costs2,097 769 
Amortization of debt discount33,932 12,919 
Total$37,354 $14,207 
The following table sets forth total interest expense recognized related to the 2026 Notes (in thousands):
Year Ended
January 31, 2021
Contractual interest expense$2,731 
Amortization of debt issuance costs813 
Amortization of debt discount27,954 
Total$31,498 
Schedule of Convertible Debt
The 2023 Notes, net consisted of the following (in thousands):
As of January 31, 2021
Liability component:
Principal$40,246 
Less: unamortized debt issuance costs and debt discount(4,591)
Net carrying amount$35,655 
Equity component:
2023 Notes$9,328 
Less: issuance costs(271)
Carrying amount of the equity component(1)
$9,057 
(1)    Included in the consolidated balance sheets within Additional paid-in capital.
The 2025 Notes, net consisted of the following (in thousands):
As of January 31, 2021
Liability component:
Principal$1,060,000 
Less: unamortized debt issuance costs and debt discount(186,971)
Net carrying amount$873,029 
Equity component:At Issuance
2025 Notes$221,387 
Less: issuance costs(4,040)
Carrying amount of the equity component(1)
$217,347 
(1)    Included in the consolidated balance sheets within Additional paid-in capital.
The 2026 Notes, net consisted of the following (in thousands):
As of January 31, 2021
Liability component:
Principal$1,150,000 
Less: unamortized debt issuance costs and debt discount(292,613)
Net carrying amount$857,387 
At Issuance
Equity component:
2026 Notes$310,311 
Less: issuance costs(4,090)
Carrying amount of the equity component(1)
$306,221 
(1) Included in the consolidated balance sheets within Additional paid-in capital.
v3.20.4
Leases (Tables)
 12 Months Ended
Jan. 31, 2021
Leases [Abstract]  
Schedule of Operating Lease Costs
Operating lease costs were as follows (in thousands):
Year Ended January 31,
202120202019
Operating lease costs(1)
$33,076 $23,193 $23,290 
(1)    Amounts are presented exclusive of sublease income and include short-term leases, which are immaterial.
Schedule of Maturities of Operating Leases Maturities of the Company’s operating lease liabilities, which do not include short-term leases, as of January 31, 2021 were as follows (in thousands):
Operating Leases
2022$34,410 
202337,910 
202438,823 
202536,289 
202626,839 
Thereafter73,135 
Total lease payments247,406 
Less imputed interest(44,279)
Total operating lease liabilities$203,127 
v3.20.4
Commitments and Contingencies (Tables)
 12 Months Ended
Jan. 31, 2021
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Purchase Obligations Fiscal Maturity Schedule
As of January 31, 2021, future minimum purchase obligations, such as data center operations and sales and marketing activities, were as follows (in thousands):
 Purchase Obligations
2022$53,992 
202338,370 
202432,844 
20251,604 
20261,417 
Total contractual obligations$128,227 
v3.20.4
Common Stock and Stockholders' Equity (Tables)
 12 Months Ended
Jan. 31, 2021
Equity [Abstract]  
Schedule of Common Stock Reserved for Future Issuance
As of January 31, 2021, shares of common stock reserved for future issuance were as follows:
As of January 31, 2021
Options and unvested RSUs outstanding12,702,220 
Available for future stock option and RSU grants20,574,441 
Available for ESPP4,633,093 
 37,909,754 
v3.20.4
Employee Incentive Plans (Tables)
 12 Months Ended
Jan. 31, 2021
Share-based Payment Arrangement [Abstract]  
Schedule of Stock-based Compensation Expense by Award Type
Stock-based compensation expense by award type was as follows (in thousands):
 Year Ended January 31,
 202120202019
Stock options$21,371 $21,888 $23,466 
RSUs 164,412 94,637 41,637 
ESPP 10,373 9,408 7,248 
Restricted stock awards25 590 1,608 
Restricted common stock — 101 2,361 
Total $196,181 $126,624 $76,320 
Schedule of Stock-based Compensation Expense by Statement of Operations Location
Stock-based compensation expense was recorded in the following cost and expense categories in the Company’s consolidated statements of operations (in thousands):  
 Year Ended January 31,
 202120202019
Cost of revenue: 
Subscription$21,895 $12,923 $7,837 
Professional services and other8,083 7,164 4,983 
Research and development63,270 37,683 22,642 
Sales and marketing53,802 38,077 22,916 
General and administrative49,131 30,777 17,942 
Total$196,181 $126,624 $76,320 
Schedule of Stock Option Activity
A summary of the Company’s stock option activity and related information was as follows:  
 
Number of
Options 
Weighted-
Average
Exercise
Price 
Weighted-
Average
Remaining
Contractual
Term
(Years)
Aggregate
Intrinsic Value
(in thousands)
Outstanding as of January 31, 202012,359,302 $11.82 6.2$1,436,487 
Granted402,891 145.08 
Exercised (4,368,683)10.44 
Canceled (143,397)19.23 
Outstanding as of January 31, 20218,250,113 $18.93 5.6$1,980,668 
As of January 31, 2021
Vested and expected to vest8,250,113 $18.93 5.6$1,980,668 
Vested and exercisable 6,818,491 $9.93 5.2$1,698,330 
Schedule of Black-Scholes Option Pricing Model Estimated Fair Value Assumptions
The Company used the Black-Scholes option pricing model to estimate the fair value of stock options granted with the following assumptions:  
 Year Ended January 31,
 202120202019
Expected volatility45 %43 %40 %
Expected term (in years)6.36.36.3
Risk-free interest rate
0.37% - 0.44%
1.55% - 2.27%
2.70 %
Expected dividend yield— — — 
Schedule of Nonvested Restricted Stock Units Activity
A summary of the Company’s RSU activities and related information is as follows:
 Number of
RSUs		Weighted-
Average
Grant Date Fair Value Per Share
Outstanding as of January 31, 20204,893,241 $77.99 
Granted2,198,704 173.64 
Vested(2,195,094)80.28 
Forfeited(444,744)90.01 
Outstanding as of January 31, 20214,452,107 $122.90 
Schedule of ESPP Black-Scholes Option Pricing Model Estimated Fair Value Assumptions
The Company estimated the fair value of ESPP purchase rights using a Black-Scholes option pricing model with the following assumptions:
Year Ended January 31,
202120202019
Expected volatility
48% - 54%
43% - 59%
39% - 70%
Expected term (in years)
0.5 - 1.0
0.5 - 1.0
0.5 - 1.0
Risk-free interest rate
0.09% - 0.18%
1.53% - 2.05%
2.12% - 2.62%
Expected dividend yield———
v3.20.4
Income Taxes (Tables)
 12 Months Ended
Jan. 31, 2021
Income Tax Disclosure [Abstract]  
Schedule of Domestic and Foreign Components of Pre-tax Loss
The domestic and foreign components of pre-tax loss for the years ended January 31, 2021, 2020 and 2019 were as follows (in thousands):  
 Year Ended January 31,
 202120202019
Domestic$(282,026)$(220,846)$(128,214)
Foreign15,835 10,514 2,700 
Loss before provision for (benefit from) income taxes$(266,191)$(210,332)$(125,514)
Schedule of Components of Provision for (Benefit from) Income Taxes
The components of the provision for (benefit from) income taxes for the years ended January 31, 2021, 2020 and 2019 were as follows (in thousands):  
 Year Ended January 31,
 202120202019
Current: 
Federal$11 $33 $— 
State136 86 61 
Foreign1,294 822 667 
Total current provision for income taxes1,441 941 728 
Deferred: 
Federal51 (518)(620)
State5 (406)(130)
Foreign(1,356)(1,436)5 
Total deferred benefit from income taxes(1,300)(2,360)(745)
Total provision for (benefit from) income taxes$141 $(1,419)$(17)
Schedule of Effective Income Tax Rate Reconciliation The following is a reconciliation of the statutory federal income tax rate to the Company’s effective tax rate for the years ended January 31, 2021, 2020 and 2019:  
 Year Ended January 31,
 202120202019
Tax at federal statutory rate21.0 %21.0 %21.0 %
State income taxes, net of federal benefit4.1 4.0 3.8 
Change in valuation allowance(101.0)(100.1)(68.5)
Stock-based compensation70.2 59.8 45.5 
Research and development credits6.4 18.0 — 
Other, net(0.8)(2.0)(1.8)
Effective tax rate(0.1)%0.7 %— %
Schedule of Deferred Tax Assets and Liabilities
The tax effects of temporary differences and related deferred tax assets and liabilities as of January 31, 2021 and 2020 were as follows (in thousands):
 As of January 31,
 20212020
Deferred tax assets: 
Net operating loss carryforwards$607,483 $370,705 
Stock-based compensation18,952 18,680 
Deferred revenue1,144 1,960 
Operating lease liabilities51,702 42,073 
Other reserves and accruals16,586 6,414 
Research and development and other credits57,060 39,918 
Disallowed interest6,091 4,507 
Total deferred tax assets759,018 484,257 
Valuation allowance(555,199)(361,606)
Total deferred tax assets, net203,819 122,651 
Deferred tax liabilities:
Convertible debt(112,547)(50,963)
Deferred commissions(38,710)(27,569)
Capitalized internal-use software costs(2,691)(2,248)
Goodwill(306)(262)
Operating lease right-of-use assets(37,522)(31,165)
Depreciation and amortization(8,522)(8,315)
Total deferred tax liabilities(200,298)(120,522)
Net deferred tax assets$3,521 $2,129 
Schedule of Unrecognized Tax Benefits Roll Forward
A reconciliation of beginning and ending amount of unrecognized tax benefit was as follows (in thousands):  
 Year Ended January 31,
 202120202019
Gross amount of unrecognized tax benefits as of the beginning of the year$15,987 $23,931 $11,719 
Additions based on tax positions related to a prior year— 658 1,859 
Additions based on tax positions related to current year7,189 6,866 10,353 
Reductions based on tax positions taken in a prior year (952)(15,468)— 
Gross amount of unrecognized tax benefits as of the end of the year$22,224 $15,987 $23,931 
v3.20.4
Net Loss Per Share (Tables)
 12 Months Ended
Jan. 31, 2021
Earnings Per Share [Abstract]  
Schedule of Basic and Diluted Net Loss Per Share
The following table presents the calculation of basic and diluted net loss per share (in thousands, except per share data):  
Year Ended January 31,
 202120202019
Class AClass BClass AClass B
Class A
Class B
Numerator:  
Net loss$(248,892)$(17,440)$(192,138)$(16,775)$(107,926)$(17,571)
Denominator:  
Weighted-average shares outstanding, basic and diluted118,882 8,330 107,809 9,412 92,452 15,052 
Net loss per share, basic and diluted$(2.09)$(2.09)$(1.78)$(1.78)$(1.17)$(1.17)
Schedule of Potentially Dilutive Securities Excluded from Computation of Diluted Per Share Potentially dilutive securities that were not included in the diluted per share calculations because they would be anti-dilutive were as follows (in thousands):
 
Year Ended January 31,
 202120202019
Issued and outstanding stock options8,250 12,359 17,804 
Unvested RSUs issued and outstanding4,452 4,893 4,836 
Unvested restricted stock awards issued and outstanding— 177 388 
Unvested shares subject to repurchase— 5 48 
Unvested restricted common stock issued and outstanding— — 400 
Shares committed under the ESPP137 253 271 
Shares related to 2023 Notes832 2,494 7,134 
Shares subject to warrants related to the issuance of 2023 Notes1,048 2,494 — 
Shares related to 2025 Notes5,617 5,617 — 
Shares related to 2026 Notes4,820 — — 
 25,156 28,292 30,881 
v3.20.4
Summary of Significant Accounting Policies - Narrative (Details) - USD ($)
 12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Payment terms for deferred revenue 30 days    
Amortization period for capitalized contract costs 5 years    
Commissions capitalized as contract costs $ 81,000,000.0 $ 61,300,000  
Amortization of contract costs 39,700,000 28,600,000 $ 20,900,000
Impairment loss related to costs capitalized 0 0 0
Noncurrent portion of restricted cash 9,500,000 11,400,000  
Advertising expenses $ 33,100,000 $ 17,000,000.0 $ 10,000,000.0
Minimum      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Contract duration 1 year    
Maximum      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Contract duration 5 years    
v3.20.4
Summary of Significant Accounting Policies - Schedule of Estimated Useful Lives (Details)
 12 Months Ended
Jan. 31, 2021
Computers and equipment  
Property, Plant and Equipment [Line Items]  
Property and equipment, useful life 3 years
Furniture and fixtures  
Property, Plant and Equipment [Line Items]  
Property and equipment, useful life 7 years
Capitalized internal-use software costs  
Property, Plant and Equipment [Line Items]  
Intangible asset, useful life 3 years
v3.20.4
Summary of Significant Accounting Policies - Schedule of Revenue by Geographic Area (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]      
Total revenue $ 835,424 $ 586,067 $ 399,254
United States      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Total revenue 701,635 494,529 337,367
International      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Total revenue $ 133,789 $ 91,538 $ 61,887
v3.20.4
Business Combinations (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Apr. 30, 2019
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2019
Business Acquisition [Line Items]        
Payments for business acquisition, net of cash acquired   $ 0 $ 44,283 $ 15,632
Purchased developed technology     $ 24,200  
Weighted average useful life   3 years 1 month 6 days 3 years 10 months 24 days  
Goodwill   $ 48,023 $ 48,023  
Series of individually immaterial business acquisitions        
Business Acquisition [Line Items]        
Payments for business acquisition, net of cash acquired     44,200  
Cash received from acquisition     1,100  
Goodwill     29,900  
Acquisition related costs $ 3,000      
Deferred compensation liability, noncurrent   10,800    
Compensation expense   $ 3,000    
Series of individually immaterial business acquisitions | Purchased developed technology        
Business Acquisition [Line Items]        
Purchased developed technology     $ 15,700  
Weighted average useful life     5 years  
v3.20.4
Cash Equivalents and Short-term Investments - Schedule of Cash Equivalents and Short-term Investments (Details) - USD ($)
$ in Thousands
Jan. 31, 2021
Jan. 31, 2020
Cash and Cash Equivalents [Line Items]    
Amortized Cost $ 2,430,865 $ 1,318,359
Unrealized Gain 2,000 1,205
Unrealized Loss (24) (8)
Estimated Fair Value  2,432,841 1,319,556
Cash and cash equivalents    
Cash and Cash Equivalents [Line Items]    
Amortized Cost 311,257 436,580
Unrealized Gain 0 0
Unrealized Loss 0 0
Estimated Fair Value  311,257 436,580
Cash and cash equivalents | Money market funds    
Cash and Cash Equivalents [Line Items]    
Amortized Cost 311,257 416,584
Unrealized Gain 0 0
Unrealized Loss 0 0
Estimated Fair Value  311,257 416,584
Cash and cash equivalents | U.S. treasury securities    
Cash and Cash Equivalents [Line Items]    
Amortized Cost   19,996
Unrealized Gain   0
Unrealized Loss   0
Estimated Fair Value    19,996
Short-term Investments    
Cash and Cash Equivalents [Line Items]    
Amortized Cost 2,119,608 881,779
Unrealized Gain 2,000 1,205
Unrealized Loss (24) (8)
Estimated Fair Value  2,121,584 882,976
Short-term Investments | U.S. treasury securities    
Cash and Cash Equivalents [Line Items]    
Amortized Cost 1,888,882 575,920
Unrealized Gain 1,571 686
Unrealized Loss (22) (8)
Estimated Fair Value  1,890,431 576,598
Short-term Investments | Corporate debt securities    
Cash and Cash Equivalents [Line Items]    
Amortized Cost 230,726 305,859
Unrealized Gain 429 519
Unrealized Loss (2) 0
Estimated Fair Value  $ 231,153 $ 306,378
v3.20.4
Cash Equivalents and Short-term Investments - Schedule of Contractual Maturities of Short-term Investments (Details) - USD ($)
$ in Thousands
Jan. 31, 2021
Jan. 31, 2020
Amortized Cost    
Amortized Cost $ 2,430,865 $ 1,318,359
Estimated Fair Value    
Total 2,432,841 1,319,556
Short-term Investments    
Amortized Cost    
Due within one year 1,509,241  
Due between one to five years 610,367  
Amortized Cost 2,119,608 881,779
Estimated Fair Value    
Due within one year 1,510,810  
Due between one to five years 610,774  
Total $ 2,121,584 $ 882,976
v3.20.4
Cash Equivalents and Short-term Investments - Narrative (Details)
 12 Months Ended
Jan. 31, 2021
USD ($)
investment
Jan. 31, 2020
USD ($)
investment
Jan. 31, 2019
USD ($)
Investments, Debt and Equity Securities [Abstract]      
Unsettled maturities of short-term investments $ 31,000,000.0 $ 0  
Interest receivable $ 10,500,000 $ 5,700,000  
Number of short-term investments in unrealized loss positions | investment 10 7  
Gross unrealized gains or losses from available-for-sale securities $ 0 $ 0 $ 0
Realized gains or losses reclassified out of accumulated other comprehensive income 0 0 $ 0
Other-than-temporary impairment short term investment $ 0 $ 0  
v3.20.4
Fair Value Measurements - Schedule of Financial Assets and Liabilities Measured at Fair Value (Details) - Fair Value, Measurements, Recurring - USD ($)
$ in Thousands
Jan. 31, 2021
Jan. 31, 2020
Assets:    
Total cash equivalents $ 311,257 $ 436,580
Total short-term investments 2,121,584 882,976
Total cash equivalents and short-term investments 2,432,841 1,319,556
Level 1    
Assets:    
Total cash equivalents 311,257 416,584
Total short-term investments 0 0
Total cash equivalents and short-term investments 311,257 416,584
Level 2     
Assets:    
Total cash equivalents 0 19,996
Total short-term investments 2,121,584 882,976
Total cash equivalents and short-term investments 2,121,584 902,972
Level 3    
Assets:    
Total cash equivalents 0 0
Total short-term investments 0 0
Total cash equivalents and short-term investments 0 0
U.S. treasury securities    
Assets:    
Total short-term investments 1,890,431 576,598
U.S. treasury securities | Level 1    
Assets:    
Total short-term investments 0 0
U.S. treasury securities | Level 2     
Assets:    
Total short-term investments 1,890,431 576,598
U.S. treasury securities | Level 3    
Assets:    
Total short-term investments 0 0
Corporate debt securities    
Assets:    
Total short-term investments 231,153 306,378
Corporate debt securities | Level 1    
Assets:    
Total short-term investments 0 0
Corporate debt securities | Level 2     
Assets:    
Total short-term investments 231,153 306,378
Corporate debt securities | Level 3    
Assets:    
Total short-term investments 0 0
Money market funds    
Assets:    
Total cash equivalents 311,257 416,584
Money market funds | Level 1    
Assets:    
Total cash equivalents 311,257 416,584
Money market funds | Level 2     
Assets:    
Total cash equivalents 0 0
Money market funds | Level 3    
Assets:    
Total cash equivalents $ 0 0
U.S. treasury securities    
Assets:    
Total cash equivalents   19,996
U.S. treasury securities | Level 1    
Assets:    
Total cash equivalents   0
U.S. treasury securities | Level 2     
Assets:    
Total cash equivalents   19,996
U.S. treasury securities | Level 3    
Assets:    
Total cash equivalents   $ 0
v3.20.4
Fair Value Measurements - Schedule of Carrying Amounts and Estimated Fair Values of Convertible Note (Details) - Senior Notes
$ in Thousands
Jan. 31, 2021
USD ($)
Net Carrying Amount | 2023 Notes  
Debt Instrument [Line Items]  
Convertible senior notes value $ 36,092
Net Carrying Amount | 2025 Notes  
Debt Instrument [Line Items]  
Convertible senior notes value 885,465
Net Carrying Amount | 2026 Notes  
Debt Instrument [Line Items]  
Convertible senior notes value 867,643
Estimated Fair Value  | 2023 Notes  
Debt Instrument [Line Items]  
Convertible senior notes value 216,926
Estimated Fair Value  | 2025 Notes  
Debt Instrument [Line Items]  
Convertible senior notes value 1,605,508
Estimated Fair Value  | 2026 Notes  
Debt Instrument [Line Items]  
Convertible senior notes value $ 1,493,850
v3.20.4
Fair Value Measurements - Narrative (Details)
$ / shares in Units, $ in Thousands
Jan. 31, 2021
USD ($)
$ / shares
Debt Instrument [Line Items]  
Closing price of common stock (in dollars per share) | $ / shares $ 259.01
2023 Notes | Senior Notes  
Debt Instrument [Line Items]  
Principal amount outstanding $ 40,246
2025 Notes | Senior Notes  
Debt Instrument [Line Items]  
Principal amount outstanding 1,060,000
2026 Notes | Senior Notes  
Debt Instrument [Line Items]  
Principal amount outstanding $ 1,150,000
v3.20.4
Goodwill and Intangible Assets, net - Narrative (Details) - USD ($)
 12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2019
Goodwill [Line Items]      
Goodwill $ 48,023,000 $ 48,023,000  
Goodwill acquired   29,900,000  
Goodwill impairments $ 0 0 $ 0
Purchased developed technology   $ 24,200,000  
Weighted average useful life 3 years 1 month 6 days 3 years 10 months 24 days  
Amortization expense $ 11,100,000 $ 10,600,000 $ 5,800,000
Capitalized internal-use software costs      
Goodwill [Line Items]      
Capitalized internal-use software $ 5,500,000 $ 5,100,000  
v3.20.4
Goodwill and Intangible Assets, net - Schedule of Intangible Assets (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Finite-Lived Intangible Assets [Line Items]    
Gross $ 59,185 $ 54,802
Accumulated Amortization (32,176) (22,154)
Write-offs 0 (119)
Net 27,009 32,529
Capitalized internal-use software costs    
Finite-Lived Intangible Assets [Line Items]    
Gross 30,259 24,890
Accumulated Amortization (19,478) (14,828)
Write-offs 0 (119)
Net 10,781 9,943
Purchased developed technology    
Finite-Lived Intangible Assets [Line Items]    
Gross 28,800 28,800
Accumulated Amortization (12,694) (6,321)
Write-offs 0 0
Net 16,106 22,479
Software licenses    
Finite-Lived Intangible Assets [Line Items]    
Gross 126 1,112
Accumulated Amortization (4) (1,005)
Write-offs 0 0
Net $ 122 $ 107
v3.20.4
Goodwill and Intangible Assets, net - Remaining Amortization Expense (Details) - USD ($)
$ in Thousands
Jan. 31, 2021
Jan. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]    
2022 $ 10,354  
2023 8,416  
2024 7,354  
2025 885  
Total $ 27,009 $ 32,529
v3.20.4
Balance Sheet Components - Schedule of Property and Equipment, Net (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2019
Property, Plant and Equipment [Line Items]      
Property and equipment, gross $ 85,052 $ 69,944  
Less accumulated depreciation (22,269) (16,409)  
Property and equipment, net 62,783 53,535  
Depreciation expense 9,400 8,800 $ 5,700
Computers and equipment      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross 1,242 3,567  
Furniture and fixtures      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross 13,948 11,014  
Leasehold improvements      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross $ 69,862 $ 55,363  
v3.20.4
Balance Sheet Components - Schedule of Allowances (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2019
Accounts Receivable, Allowance for Credit Loss [Roll Forward]      
Balance, beginning of period $ 1,166 $ 2,098 $ 1,472
Additions (reductions) 3,252 (673) 888
Write-offs (967) (259) (262)
Balance, end of period $ 3,451 $ 1,166 $ 2,098
v3.20.4
Balance Sheet Components - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($)
$ in Thousands
Jan. 31, 2021
Jan. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Accrued expenses $ 24,717 $ 22,530
Accrued taxes payable 2,462 1,591
Operating lease liabilities 23,403 12,064
Other 3,147 702
Accrued expenses and other current liabilities $ 53,729 $ 36,887
Operating lease liability, current, statement of financial position us-gaap:OtherLiabilitiesCurrent us-gaap:OtherLiabilitiesCurrent
v3.20.4
Balance Sheet Components - Schedule of Other Liabilities, Noncurrent (Details) - USD ($)
$ in Thousands
Jan. 31, 2021
Jan. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Deferred tax liabilities $ 3,877 $ 1,558
Other 7,498 3,803
Other liabilities, noncurrent $ 11,375 $ 5,361
v3.20.4
Deferred Revenue and Performance Obligations (Details) - USD ($)
$ in Millions
 12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Revenue from Contract with Customer [Abstract]    
Revenue recognized that was included in the contract liability balance $ 361.0 $ 241.1
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Revenue from remaining performance obligations 1,796.9  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-02-01    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Revenue from remaining performance obligations $ 841.8  
Remaining performance obligation, percentage 47.00%  
Performance obligations expected to be satisfied, expected timing 12 months  
v3.20.4
Convertible Senior Notes, Net - Convertible Senior Notes Narrative (Details)
$ / shares in Units, shares in Millions
 1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Feb. 01, 2021
USD ($)
Jun. 30, 2020
USD ($)
shares
Sep. 30, 2019
USD ($)
tradingDay
$ / shares
shares
Feb. 28, 2018
USD ($)
tradingDay
Jan. 31, 2021
USD ($)
$ / shares
Oct. 31, 2020
USD ($)
Jan. 31, 2021
USD ($)
tradingDay
$ / shares
shares
Jan. 31, 2020
USD ($)
Jan. 31, 2019
USD ($)
Debt Instrument [Line Items]                  
Loss on early extinguishment and conversion of debt             $ 2,263,000 $ 14,572,000 $ 0
2023 Notes                  
Debt Instrument [Line Items]                  
Limitation on sale of common stock, sale price threshold, number of trading days | tradingDay             80    
2026 Notes                  
Debt Instrument [Line Items]                  
Redemption price percentage             130.00%    
Senior Notes | 2023 Notes                  
Debt Instrument [Line Items]                  
Fixed interest rate       0.25%          
Net proceeds from notes       $ 335,000,000.0          
Repayments of debt     $ 224,400,000            
Repurchase amount   $ 260,500,000 604,800,000            
Debt component of aggregate consideration   61,800,000 197,700,000            
Equity component of aggregate consideration   $ 198,700,000 $ 407,100,000            
Effective interest rate   4.90% 4.00%   5.68%   5.68%    
Aggregate principal amount   $ 59,600,000 $ 183,100,000            
Loss on early extinguishment and conversion of debt           $ 14,600,000 $ 2,200,000    
Debt issuance costs         $ 10,000,000.0   10,000,000.0 $ 3,800,000  
Senior notes   69,900,000              
Repayments of debt   $ 200,000              
Write off of deferred debt issuance cost             1,000,000.0    
Principal amount outstanding         $ 40,246,000   $ 40,246,000    
Initial conversion rate of common stock             0.0206795    
Conversion price (in dollars per share) | $ / shares         $ 48.36   $ 48.36    
Limitation on sale of common stock, sale price threshold, number of trading days | tradingDay       20          
Limitation on sale of common stock, sale price threshold, trading period | tradingDay       30          
Threshold percentage of stock price trigger       130.00%     130.00%    
Number of consecutive business days | tradingDay             5    
Percentage of closing sale price in excess of convertible notes       98.00%          
Repayments of debt             $ 300,000    
Debt conversion, original debt amount         $ 4,300,000   10,400,000    
Redemption price percentage       100.00%          
Issuance costs attributable to liability component         $ 7,700,000   $ 7,700,000    
Senior Notes | 2023 Notes | Subsequent Event | Forecast                  
Debt Instrument [Line Items]                  
Debt conversion, original debt amount $ 3,200,000                
Senior Notes | 2025 Notes                  
Debt Instrument [Line Items]                  
Fixed interest rate     0.125%            
Net proceeds from notes     $ 1,040,700,000            
Effective interest rate         4.10%   4.10%    
Debt issuance costs         $ 19,300,000   $ 19,300,000    
Principal amount outstanding         1,060,000,000   $ 1,060,000,000    
Initial conversion rate of common stock             0.0052991    
Conversion price (in dollars per share) | $ / shares     $ 188.71            
Sales price as a percentage of conversion price     130.00%            
Limitation on sale of common stock, sale price threshold, trading period | tradingDay     30            
Percentage of closing sale price in excess of convertible notes     98.00%            
Redemption price percentage     100.00%            
Issuance costs attributable to liability component         $ 15,300,000   $ 15,300,000    
Limit within threshold of consecutive trading days | tradingDay             20    
Senior Notes | 2026 Notes                  
Debt Instrument [Line Items]                  
Fixed interest rate         0.375%   0.375%    
Net proceeds from notes             $ 1,134,800,000    
Effective interest rate         5.75%   5.75%    
Debt issuance costs         $ 15,200,000   $ 15,200,000    
Principal amount outstanding         $ 1,150,000,000   $ 1,150,000,000    
Initial conversion rate of common stock             0.0041912    
Conversion price (in dollars per share) | $ / shares         $ 238.60   $ 238.60    
Sales price as a percentage of conversion price             130.00%    
Limitation on sale of common stock, sale price threshold, trading period | tradingDay             30    
Number of consecutive business days | tradingDay             5    
Percentage of closing sale price in excess of convertible notes             98.00%    
Redemption price percentage             100.00%    
Issuance costs attributable to liability component         $ 11,100,000   $ 11,100,000    
Limit within threshold of consecutive trading days | tradingDay             20    
Repurchased amount         0   $ 0    
Additional Paid-in Capital | Senior Notes | 2023 Notes                  
Debt Instrument [Line Items]                  
Debt issuance costs, equity component         2,300,000   2,300,000    
Equity issuance costs         271,000   271,000    
Additional Paid-in Capital | Senior Notes | 2025 Notes                  
Debt Instrument [Line Items]                  
Equity issuance costs         4,040,000   4,040,000    
Additional Paid-in Capital | Senior Notes | 2026 Notes                  
Debt Instrument [Line Items]                  
Equity issuance costs         $ 4,090,000   $ 4,090,000    
Class A Common Stock  | Senior Notes | 2023 Notes                  
Debt Instrument [Line Items]                  
Stock issued during the period (in shares) | shares   1.4 3.0            
Shares issued to settle debt | shares             0.2    
v3.20.4
Convertible Senior Notes, Net - Schedule of Interest Expense (Details) - Senior Notes - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
2023 Notes    
Debt Instrument [Line Items]    
Contractual interest expense $ 180 $ 606
Amortization of debt issuance costs 312 985
Amortization of debt discount 3,316 11,219
Total 3,808 12,810
2025 Notes    
Debt Instrument [Line Items]    
Contractual interest expense 1,325 519
Amortization of debt issuance costs 2,097 769
Amortization of debt discount 33,932 12,919
Total 37,354 $ 14,207
2026 Notes    
Debt Instrument [Line Items]    
Contractual interest expense 2,731  
Amortization of debt issuance costs 813  
Amortization of debt discount 27,954  
Total $ 31,498  
v3.20.4
Convertible Senior Notes, Net - Schedule of Convertible Debt (Details) - Senior Notes
$ in Thousands
Jan. 31, 2021
USD ($)
2023 Notes  
Liability component:  
Principal $ 40,246
Less: unamortized debt issuance costs and debt discount (4,591)
Net carrying amount 35,655
2025 Notes  
Liability component:  
Principal 1,060,000
Less: unamortized debt issuance costs and debt discount (186,971)
Net carrying amount 873,029
2026 Notes  
Liability component:  
Principal 1,150,000
Less: unamortized debt issuance costs and debt discount (292,613)
Net carrying amount 857,387
Additional Paid-in Capital | 2023 Notes  
Equity component:  
Notes 9,328
Less: issuance costs (271)
Carrying amount of the equity component 9,057
Additional Paid-in Capital | 2025 Notes  
Equity component:  
Notes 221,387
Less: issuance costs (4,040)
Carrying amount of the equity component 217,347
Additional Paid-in Capital | 2026 Notes  
Equity component:  
Notes 310,311
Less: issuance costs (4,090)
Carrying amount of the equity component $ 306,221
v3.20.4
Convertible Senior Notes, Net - Note Hedges, Warrants and Capped Calls (Details)
$ / shares in Units, shares in Thousands, $ in Thousands
 1 Months Ended 12 Months Ended
Jun. 30, 2020
USD ($)
shares
Sep. 30, 2019
USD ($)
$ / shares
shares
Feb. 28, 2018
tradingDay
Jan. 31, 2021
USD ($)
tradingDay
$ / shares
shares
Jan. 31, 2020
USD ($)
shares
Jan. 31, 2019
USD ($)
shares
Debt Instrument [Line Items]            
Aggregate amount paid for cost of Note Hedge       $ 0 $ 0 $ 80,040
Proceeds from hedges related to convertible senior notes       195,046 405,851  
Proceeds from issuance of warrants related to convertible senior notes       0 0 52,440
Payments for repurchase of warrants       $ 175,399 $ 358,622 $ 0
Antidilutive securities excluded from computation of earnings per share (in shares) | shares       25,156 28,292 30,881
Payment for capped calls       $ 133,975 $ 74,094 $ 0
2023 Notes            
Debt Instrument [Line Items]            
Shares issuable under warrants granted (in shares) | shares 1,400 4,600        
Number of shares available for purchase | shares       800    
Number of warrants outstanding (in shares) | shares       1,000    
Limitation on sale of common stock, sale price threshold, number of trading days | tradingDay       80    
Per share value, shares issuable under warrants granted (in dollars per share) | $ / shares       $ 68.06    
Proceeds from issuance of warrants related to convertible senior notes       $ 52,400    
Payments for repurchase of warrants $ 175,400 $ 358,600        
2025 Notes            
Debt Instrument [Line Items]            
Initial cap price (in dollars per share) | $ / shares       $ 255.88    
Payment for capped calls       $ 74,100    
2026 Notes            
Debt Instrument [Line Items]            
Initial cap price (in dollars per share) | $ / shares       $ 360.14    
Payment for capped calls       $ 134,000    
Senior Notes | 2023 Notes            
Debt Instrument [Line Items]            
Shares issuable under warrants granted (in shares) | shares 1,400 4,600   7,100    
Conversion price (in dollars per share) | $ / shares       $ 48.36    
Aggregate amount paid for cost of Note Hedge       $ 80,000    
Proceeds from hedges related to convertible senior notes $ 195,000 $ 405,900        
Hedge exercised, underlying debt instrument amount       $ 10,400    
Hedge exercised, number of shares received | shares       200    
Number of warrants outstanding (in shares) | shares       7,100    
Limitation on sale of common stock, sale price threshold, number of trading days | tradingDay     20      
Senior Notes | 2025 Notes            
Debt Instrument [Line Items]            
Conversion price (in dollars per share) | $ / shares   $ 188.71        
Senior Notes | 2026 Notes            
Debt Instrument [Line Items]            
Conversion price (in dollars per share) | $ / shares       $ 238.60    
Convertible debt securities            
Debt Instrument [Line Items]            
Antidilutive securities excluded from computation of earnings per share (in shares) | shares       832 2,494 7,134
Convertible debt securities | 2025 Notes            
Debt Instrument [Line Items]            
Antidilutive securities excluded from computation of earnings per share (in shares) | shares       5,600    
Convertible debt securities | 2026 Notes            
Debt Instrument [Line Items]            
Antidilutive securities excluded from computation of earnings per share (in shares) | shares       4,800    
v3.20.4
Leases - Narrative (Details)
 12 Months Ended
Jan. 31, 2021
USD ($)
renewalOption
Jan. 31, 2020
USD ($)
Other Commitments [Line Items]    
Number of renewal options | renewalOption 2  
Operating lease renewal term 5 years  
Weighted average remaining lease term 6 years 9 months 18 days 7 years 10 months 24 days
Weighted average discount rate 5.60% 5.70%
Operating lease payments $ 31,100,000 $ 18,300,000
Operating lease impairment charge $ 3,100,000 $ 0
San Francisco - Ten Year Lease    
Other Commitments [Line Items]    
Operating lease term 10 years  
v3.20.4
Leases - Schedule of Operating Lease Costs (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2019
Leases [Abstract]      
Operating lease costs $ 33,076 $ 23,193 $ 23,290
v3.20.4
Leases - Schedule of Maturities of Operating Leases (Details)
$ in Thousands
Jan. 31, 2021
USD ($)
Leases [Abstract]  
2022 $ 34,410
2023 37,910
2024 38,823
2025 36,289
2026 26,839
Thereafter 73,135
Total lease payments 247,406
Less imputed interest (44,279)
Operating lease liability $ 203,127
v3.20.4
Commitments and Contingencies - Narrative (Details) - Letter of Credit - USD ($)
Jan. 31, 2021
Jan. 31, 2020
Other Commitments [Line Items]    
Letters of credit issued and outstanding $ 11,200,000 $ 11,900,000
Draws on letters of credit $ 0  
v3.20.4
Commitments and Contingencies - Summary of Future Commitment Maturity Schedules (Details)
$ in Thousands
Jan. 31, 2021
USD ($)
Purchase Obligations  
2022 $ 53,992
2023 38,370
2024 32,844
2025 1,604
2026 1,417
Total contractual obligations $ 128,227
v3.20.4
Common Stock and Stockholders' Equity - Narrative (Details)
$ in Thousands
 1 Months Ended 12 Months Ended
Jun. 30, 2020
shares
Sep. 30, 2019
shares
Jan. 31, 2021
USD ($)
vote
shares
Jan. 31, 2020
USD ($)
shares
Jan. 31, 2019
USD ($)
shares
Class of Stock [Line Items]          
Non-cash charitable contributions | $     $ 9,292 $ 1,746 $ 1,008
2023 Notes | Senior Notes          
Class of Stock [Line Items]          
Hedge exercised, number of shares received     200,000    
Class A Common Stock           
Class of Stock [Line Items]          
Number of votes per share | vote     1    
Number of shares issued upon conversion     1    
Class A Common Stock  | 2023 Notes | Senior Notes          
Class of Stock [Line Items]          
Stock issued during the period (in shares) 1,400,000 3,000,000.0      
Shares issued to settle debt     200,000    
Class A Common Stock  | Contribution of nonmonetary assets to charitable organization          
Class of Stock [Line Items]          
Issuance of common stock pursuant to charitable donation (in shares)     42,500 15,000 20,000
Non-cash charitable contributions | $     $ 9,300 $ 1,700 $ 1,000
Class B Common Stock           
Class of Stock [Line Items]          
Number of votes per share | vote     10    
v3.20.4
Common Stock and Stockholders' Equity - Schedule of Common Stock Reserved for Future Issuance (Details)
Jan. 31, 2021
shares
Class of Stock [Line Items]  
Common stock reserved for future issuance and options and unvested RSUs outstanding (in shares) 37,909,754
Options and unvested RSUs outstanding  
Class of Stock [Line Items]  
Options and unvested RSUs outstanding (in shares) 12,702,220
Common stock, reserved for future issuance (in shares) 20,574,441
ESPP  
Class of Stock [Line Items]  
Common stock, reserved for future issuance (in shares) 4,633,093
v3.20.4
Employee Incentive Plans - Schedule of Stock-based Compensation Expense by Award Type (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense $ 196,181 $ 126,624 $ 76,320
Stock options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense 21,371 21,888 23,466
RSUs      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense 164,412 94,637 41,637
ESPP      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense 10,373 9,408 7,248
Restricted stock awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense 25 590 1,608
Restricted common stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense $ 0 $ 101 $ 2,361
v3.20.4
Employee Incentive Plans - Schedule of Stock-based Compensation Expense by Statement of Operations Location (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense $ 196,181 $ 126,624 $ 76,320
Subscription      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense 21,895 12,923 7,837
Professional services and other      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense 8,083 7,164 4,983
Research and development      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense 63,270 37,683 22,642
Sales and marketing      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense 53,802 38,077 22,916
General and administrative      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense $ 49,131 $ 30,777 $ 17,942
v3.20.4
Employee Incentive Plans - Narrative (Details)
$ / shares in Units, $ in Thousands
 12 Months Ended
Jan. 31, 2021
USD ($)
offering_period
incentive_plan
$ / shares
shares
Jan. 31, 2020
USD ($)
$ / shares
shares
Jan. 31, 2019
USD ($)
$ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of equity incentive plans | incentive_plan 2    
Options to purchase common stock outstanding (in shares) | shares 8,250,113 12,359,302  
Weighted average grant date fair value of options granted (in dollars per share) | $ / shares $ 63.32 $ 37.35 $ 17.21
Grant date fair value of vested stock options $ 19,700 $ 23,700 $ 23,800
Intrinsic value of options exercised 772,300 558,600 309,300
Unrecognized stock-based compensation expense 31,100 28,200  
Issuance of common stock under employee stock purchase plan, net of cancellations $ 25,911 $ 18,767 13,727
Stock options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expiration period (years) 10 years    
Vesting period 4 years    
Weighted average stock-based compensation recognition period 1 year 4 months 24 days 1 year 4 months 24 days  
RSUs      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted average stock-based compensation recognition period 2 years 6 months    
Granted during period (in shares) | shares 2,198,704    
Shares issued fair value $ 381,800    
Unrecognized compensation costs related to unvested restricted stock units 502,800    
Fair value of units vested $ 410,400 $ 193,900 $ 58,700
ESPP      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted average stock-based compensation recognition period 10 months 24 days    
Unrecognized compensation costs related to unvested restricted stock units $ 10,100    
ESPP offering period 12 months    
Number of offering periods | offering_period 2    
ESPP length of purchase period 6 months    
Number of shares issued under ESPP | shares 247,142 322,795  
Weighted average price, shares issued under ESPP (in dollars per share) | $ / shares $ 104.84 $ 58.14  
2017 Equity Incentive Plan | Class A Common Stock       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Options to purchase common stock outstanding (in shares) | shares 1,074,212    
2017 Equity Incentive Plan | Class B Common Stock       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Options to purchase common stock outstanding (in shares) | shares 7,175,901    
Vesting tranche one | Stock options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 1 year    
Vesting percentage earned by employees after each completed year of service 25.00%    
v3.20.4
Employee Incentive Plans - Schedule of Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Number of Options     
Number of options, outstanding beginning of period (in shares) 12,359,302  
Number of options, granted (in shares) 402,891  
Number of options, exercised (in shares) (4,368,683)  
Number of options, canceled (in shares) (143,397)  
Number of options, outstanding end of period (in shares) 8,250,113 12,359,302
Vested and expected to vest, number of options (in shares) 8,250,113  
Vested and exercisable, number of options (in shares) 6,818,491  
Weighted- Average Exercise Price     
Options outstanding, weighted average exercise price beginning of period (in dollars per share) $ 11.82  
Options granted, weighted average exercise price (in dollars per share) 145.08  
Options exercised, weighted average exercise price (in dollars per share) 10.44  
Options canceled, weighted average exercise price (in dollars per share) 19.23  
Options outstanding, weighted average exercise price end of period (in dollars per share) 18.93 $ 11.82
Vested and expected to vest, weighted average exercise price (in dollars per share) 18.93  
Vested and exercisable, weighted average exercise price (in dollars per share) $ 9.93  
Additional Disclosures    
Options outstanding, weighted average remaining contractual term 5 years 7 months 6 days 6 years 2 months 12 days
Vested and expected to vest, weighted average remaining contractual term 5 years 7 months 6 days  
Vested and exercisable, weighted average remaining contractual term 5 years 2 months 12 days  
Options outstanding, aggregate intrinsic value $ 1,980,668 $ 1,436,487
Vested and expected to vest, aggregate intrinsic value 1,980,668  
Vested and exercisable, aggregate intrinsic value $ 1,698,330  
v3.20.4
Employee Incentive Plans - Schedule of Estimated Fair Value Assumptions (Details)
 12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2019
Stock options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expected volatility 45.00% 43.00% 40.00%
Expected term (in years) 6 years 3 months 18 days 6 years 3 months 18 days 6 years 3 months 18 days
Risk-free interest rate, minimum 0.37% 1.55%  
Risk-free interest rate, maximum 0.44% 2.27%  
Risk-free interest rate     2.70%
Expected dividend yield 0.00% 0.00% 0.00%
ESPP      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Risk-free interest rate, minimum 0.09% 1.53% 2.12%
Risk-free interest rate, maximum 0.18% 2.05% 2.62%
Expected dividend yield 0.00% 0.00% 0.00%
ESPP | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expected volatility 48.00% 43.00% 39.00%
Expected term (in years) 6 months 6 months 6 months
ESPP | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expected volatility 54.00% 59.00% 70.00%
Expected term (in years) 1 year 1 year 1 year
v3.20.4
Employee Incentive Plans - Schedule of Restricted Stock Unit Activity (Details) - RSUs
 12 Months Ended
Jan. 31, 2021
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
Outstanding at beginning of period (in shares) | shares 4,893,241
Granted during period (in shares) | shares 2,198,704
Vested during period (in shares) | shares (2,195,094)
Forfeited during period (in shares) | shares (444,744)
Outstanding at end of period (in shares) | shares 4,452,107
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]  
Outstanding at beginning of period (in dollars per share) | $ / shares $ 77.99
Granted during period (in dollars per share) | $ / shares 173.64
Vested during period (in dollars per share) | $ / shares 80.28
Forfeited during period (in dollars per share) | $ / shares 90.01
Outstanding at end of period (in dollars per share) | $ / shares $ 122.90
v3.20.4
Income Taxes - Schedule of Domestic and Foreign Components of Pre-tax Loss (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2019
Income Tax Disclosure [Abstract]      
Domestic $ (282,026) $ (220,846) $ (128,214)
Foreign 15,835 10,514 2,700
Loss before provision for (benefit from) income taxes $ (266,191) $ (210,332) $ (125,514)
v3.20.4
Income Taxes - Schedule of Components of Provision for (Benefit from) Income Taxes (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2019
Current:      
Federal $ 11 $ 33 $ 0
State 136 86 61
Foreign 1,294 822 667
Total current provision for income taxes 1,441 941 728
Deferred:      
Federal 51 (518) (620)
State 5 (406) (130)
Foreign (1,356) (1,436) 5
Total deferred benefit from income taxes (1,300) (2,360) (745)
Total provision for (benefit from) income taxes $ 141 $ (1,419) $ (17)
v3.20.4
Income Taxes - Narrative (Details) - USD ($)
 12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Increase in valuation allowance $ 193,600,000 $ 157,700,000
Accrued penalties and interest related to unrecognized tax benefits 0 $ 0
Domestic Tax Authority    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Operating loss carryforwards 2,390,300,000  
Domestic Tax Authority | Research Tax Credit Carryforward    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Tax credit carryforward 50,300,000  
State and Local Jurisdiction    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Operating loss carryforwards 1,541,900,000  
State and Local Jurisdiction | Research Tax Credit Carryforward    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Tax credit carryforward 33,400,000  
State and Local Jurisdiction | California Enterprise Zone Credit    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Tax credit carryforward 1,000,000.0  
UNITED KINGDOM    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Operating loss carryforwards $ 49,400,000  
v3.20.4
Income Taxes - Reconciliation of Effective Income Tax Rate (Details)
 12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2019
Income Tax Disclosure [Abstract]      
Tax at federal statutory rate 21.00% 21.00% 21.00%
State income taxes, net of federal benefit 4.10% 4.00% 3.80%
Change in valuation allowance (101.00%) (100.10%) (68.50%)
Stock-based compensation 70.20% 59.80% 45.50%
Research and development credits 6.40% 18.00% 0.00%
Other, net (0.80%) (2.00%) (1.80%)
Effective tax rate (0.10%) 0.70% 0.00%
v3.20.4
Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Jan. 31, 2021
Jan. 31, 2020
Deferred tax assets:    
Net operating loss carryforwards $ 607,483 $ 370,705
Stock-based compensation 18,952 18,680
Deferred revenue 1,144 1,960
Operating lease liabilities 51,702 42,073
Other reserves and accruals 16,586 6,414
Research and development and other credits 57,060 39,918
Disallowed interest 6,091 4,507
Total deferred tax assets 759,018 484,257
Valuation allowance (555,199) (361,606)
Total deferred tax assets, net 203,819 122,651
Deferred tax liabilities:    
Convertible debt (112,547) (50,963)
Deferred commissions (38,710) (27,569)
Capitalized internal-use software costs (2,691) (2,248)
Goodwill (306) (262)
Operating lease right-of-use assets (37,522) (31,165)
Depreciation and amortization (8,522) (8,315)
Total deferred tax liabilities (200,298) (120,522)
Net deferred tax asset $ 3,521 $ 2,129
v3.20.4
Income Taxes - Unrecognized Tax Benefits Rollforward (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2019
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]      
Gross amount of unrecognized tax benefits as of the beginning of the year $ 15,987 $ 23,931 $ 11,719
Additions based on tax positions related to a prior year 0 658 1,859
Additions based on tax positions related to current year 7,189 6,866 10,353
Reductions based on tax positions taken in a prior year (952) (15,468) 0
Gross amount of unrecognized tax benefits as of the end of the year $ 22,224 $ 15,987 $ 23,931
v3.20.4
Net Loss Per Share - Schedule of Basic and Diluted Net Loss Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2019
Numerator:      
Net loss $ (266,332) $ (208,913) $ (125,497)
Denominator:      
Weighted-average shares outstanding, basic and diluted (in shares) 127,212 117,221 107,504
Net loss per share attributable to common stockholders, basic and diluted (in dollars per share) $ (2.09) $ (1.78) $ (1.17)
Class A Common Stock       
Denominator:      
Weighted-average shares outstanding, basic and diluted (in shares) 118,882 107,809 92,452
Net loss per share attributable to common stockholders, basic and diluted (in dollars per share) $ (2.09) $ (1.78) $ (1.17)
Class B Common Stock       
Denominator:      
Weighted-average shares outstanding, basic and diluted (in shares) 8,330 9,412 15,052
Net loss per share attributable to common stockholders, basic and diluted (in dollars per share) $ (2.09) $ (1.78) $ (1.17)
Common Stock | Class A Common Stock       
Numerator:      
Net loss $ (248,892) $ (192,138) $ (107,926)
Common Stock | Class B Common Stock       
Numerator:      
Net loss $ (17,440) $ (16,775) $ (17,571)
v3.20.4
Net Loss Per Share - Schedule of Potentially Dilutive Securities Excluded from Computation (Details) - shares
shares in Thousands
 12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive securities excluded from computation of earnings per share (in shares) 25,156 28,292 30,881
Issued and outstanding stock options      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive securities excluded from computation of earnings per share (in shares) 8,250 12,359 17,804
Unvested RSUs issued and outstanding      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive securities excluded from computation of earnings per share (in shares) 4,452 4,893 4,836
Unvested restricted stock awards issued and outstanding      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive securities excluded from computation of earnings per share (in shares) 0 177 388
Unvested shares subject to repurchase      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive securities excluded from computation of earnings per share (in shares) 0 5 48
Unvested restricted common stock issued and outstanding      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive securities excluded from computation of earnings per share (in shares) 0 0 400
Shares committed under the ESPP      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive securities excluded from computation of earnings per share (in shares) 137 253 271
Shares related to 2023 Notes      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive securities excluded from computation of earnings per share (in shares) 832 2,494 7,134
Shares subject to warrants related to the issuance of 2023 Notes      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive securities excluded from computation of earnings per share (in shares) 1,048 2,494 0
Shares related to 2025 Notes      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive securities excluded from computation of earnings per share (in shares) 5,617 5,617 0
Shares related to 2026 Notes      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive securities excluded from computation of earnings per share (in shares) 4,820 0 0
v3.20.4
Net Loss Per Share - Narrative (Details)
Jan. 31, 2021
$ / shares
2023 Notes  
Debt Instrument [Line Items]  
Class of warrant or right, conversion price (in dollars per share) $ 68.06
v3.20.4
Subsequent Events (Details) - Auth0 - Subsequent Event
$ / shares in Units, $ in Billions
Mar. 03, 2021
USD ($)
tradingDay
$ / shares
Subsequent Event [Line Items]  
Aggregate consideration | $ $ 6.5
Share price (in dollars per share) | $ / shares $ 276.2147
Threshold trading days | tradingDay 20
v3.20.4
Label Element Value
Restricted Cash and Cash Equivalents, Current us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue $ 4,553,000
Restricted Cash and Cash Equivalents, Current us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue 467,000
Restricted Cash and Cash Equivalents, Current us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue 1,384,000
Restricted Cash and Cash Equivalents, Noncurrent us-gaap_RestrictedCashAndCashEquivalentsNoncurrent 9,470,000
Restricted Cash and Cash Equivalents, Noncurrent us-gaap_RestrictedCashAndCashEquivalentsNoncurrent 11,438,000
Restricted Cash and Cash Equivalents, Noncurrent us-gaap_RestrictedCashAndCashEquivalentsNoncurrent $ 11,437,000